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Browse our growing collection of unit definitions:

Bits (b)

A binary digit, with the value 0 or 1 which is used to store or represent data.

Bytes (B)

The byte is a unit of digital information that most commonly consists of eight bits (b).

Exabits (Eb)

The exabit is a multiple of the unit bit (b) for digital information or computer storage. The prefix exa (E) is defined in the International System of Units (SI) as a multiplier of 1018 (1 quintillion, short scale), and therefore 1 exabit = 1018 bits = 1000000000000000000 bits = 1000 petabits (Pb).

Exabytes (EB)

The exabyte is a multiple of the unit byte (B) for digital information. In the International System of Units (SI), the prefix exa (E) indicates multiplication by the sixth power of 1000 (1018).

Exbibits (Eib)

The exbibit is a multiple of the bit (b), a unit of digital information storage, prefixed by the standards-based multiplier exbi (Ei), a binary prefix meaning 260.

Exbibytes (EiB)

The exbibyte is 260 bytes (B) of digital information. The prefix exbi (Ei) represents multiplication by 260, therefore: 1 exbibyte = 260 bytes = 1152921504606846976 bytes = 1024 pebibytes (PiB).

Gibibits (Gib)

The gibibit is a multiple of the bit (b), a unit of information, prefixed by the standards-based multiplier gibi (Gi), a binary prefix meaning 230.

Gibibytes (GiB)

The gibibyte is a multiple of the unit byte (B) for digital information. The binary prefix gibi (Gi) means 230, therefore one gibibyte is equal to 1073741824 bytes = 1024 mebibytes (MiB).

Gigabits (Gb)

The gigabit is a multiple of the unit bit (b) for digital information or computer storage. The prefix giga (G) is defined in the International System of Units (SI) as a multiplier of 109 (1 billion, short scale), and therefore 1 gigabit = 109 bits = 1000000000 bits.

Gigabytes (GB)

The gigabyte is a multiple of the unit byte (B) for digital information. The prefix giga (G) means 109 in the International System of Units (SI). Therefore, one gigabyte is one billion bytes. The gigabyte is represented by the symbol GB.

Kibibits (Kib)

The kibibit is a multiple of the bit (b), a unit of digital information storage, using the standard binary prefix kibi (Ki), meaning 210. Therefore, 1 kibibit = 210 bits = 1,024 bits The kibibit is represented by the symbols Kib or Kibit.

Kibibytes (KiB)

The kibibyte is a multiple of the unit byte (B) for quantities of digital information. The binary prefix kibi (Ki) means 210, or 1024. Therefore, 1 kibibyte is 1024 bytes. The kibibyte is represented by the symbol KiB.

Kilobits (kb)

The kilobit is a multiple of the unit bit (b) for digital information or computer storage. The prefix kilo (k) is defined in the International System of Units (SI) as a multiplier of 103 (1 thousand), and therefore, 1 kilobit = 103 bits = 1000 bits. The kilobit is represented by the symbol kbit or kb.

Kilobytes (KB)

The kilobyte is a multiple of the unit byte (B) for digital information. The International System of Units (SI) defines the prefix kilo (K) as 1000 (103); per this definition, one kilobyte is 1000 bytes.

Mebibits (Mib)

The mebibit is a multiple of the bit (b), a unit of information, prefixed by the standards-based multiplier mebi (Mi), a binary prefix meaning 220 or 1 mebibit = 220 bits = 1048576 bits = 1024 kibibits (Kib).

Mebibytes (MiB)

The mebibyte is a multiple of the unit byte (B) for digital information. The binary prefix mebi (Mi) means 220. Therefore, one mebibyte is equal to 1048576 bytes or 1024 kibibytes (KiB). The mebibyte is represented by the symbol MiB.

Megabits (Mb)

The megabit is a multiple of the unit bit for digital information. The prefix mega (M) is defined in the International System of Units (SI) as a multiplier of 106 (1 million), and therefore 1 megabit = 106 bits (b) = 1000000 bits = 1000 kilobits (Kb). The megabit is represented by the symbol Mbit or Mb.

Megabytes (MB)

The megabyte is a multiple of the unit byte (B) for digital information. The unit prefix mega (M) is a multiplier of 1000000 (106) in the International System of Units (SI). Therefore, one megabyte is one million bytes of information. The megabyte is represented by the symbol MB.

Nibble (nibble)

In computing, a nibble (occasionally nybble or nyble to match the spelling of byte) is a four-bit aggregation, or half an octet.

Pebibits (Pib)

The pebibit is a multiple of the bit (b), a unit of digital information storage, prefixed by the standards-based multiplier pebi (Pi), a binary prefix meaning 250. Therefore, 1 pebibit = 250 bits = 1125899906842624 bits = 1024 tebibits (Tib). The pebibit is represented by the symbols Pibit and Pib.

Pebibytes (PiB)

The pebibyte is a multiple of the unit byte (B) for digital information. The prefix pebi (Pi) represents multiplication by 10245, therefore: 1 pebibyte = 250 bytes = 1125899906842624 bytes = 1024 tebibytes (TiB). The pebibyte is represented by the symbol PiB.

Petabits (Pb)

The petabit is a multiple of the unit bit (b) for digital information or computer storage. The prefix peta (P) is defined in the International System of Units (SI) as a multiplier of 1015 (1 quadrillion, short scale), and therefore 1 petabit = 1015 bits = 1000000000000000 bits = 1000 terabits (Tb). The petabit is represented by the symbols Pbit and Pb.

Petabytes (PB)

A petabyte is 1015 bytes (B) of digital information. Therefore, 1 PB = 1000000000000000 B = 1015 bytes = 1000 terabytes (TB) and 1000 PB = 1 exabyte (EB). The petabyte is represented by the symbol PB.

Tebibits (Tib)

The tebibit is a multiple of the bit (b), a unit of information, prefixed by the standards-based multiplier tebi (Ti), a binary prefix meaning 240. Therefore, 1 tebibit = 240 bits = 1099511627776 bits = 1024 gibibits (Gib). The tebibit (Tib) is represented by the symbols Tibit and Tib.

Tebibytes (TiB)

The tebibyte is a multiple of the unit byte (B) for digital information. The prefix tebi (Ti) represents multiplication by 10244, therefore: 1 tebibyte = 240 bytes = 1099511627776 bytes = 1024 gibibytes (GiB) and 1024 TiB = 1 pebibyte (PiB). The tebibyte is represented by the symbol TiB.

Terabits (Tb)

A terabit is a multiple of the unit bit (b) for digital information or computer storage. The prefix tera (T) is defined in the International System of Units (SI) as a multiplier of 1012 (1 trillion, short scale), and therefore 1 terabit = 1012 bits = 1000000000000 bits = 1000 gigabits. The terabit is represented by the symbols Tbit and Tb.

Terabytes (TB)

The terabyte is a multiple of the unit byte (B) for digital information. The prefix tera (T) represents the fourth power of 1000, and means 1012 in the International System of Units (SI), and therefore one terabyte is one trillion (short scale) bytes. Therefore, 1 TB = 1000000000000 bytes = 1012 bytes = 1000 gigabytes (GB) and 1000 TB = 1 petabyte (PB). The terabyte is represented by the symbol TB.

Yobibits (Yib)

The yobibit is a multiple of the bit (b), a unit of digital information storage, prefixed by the standards-based multiplier yobi (Yi), a binary prefix meaning 280. Therefore, 1 yobibit = 280 bits = 1208925819614629174706176 bits = 1024 zebibits (Zib). The yobibit is represented by the symbol Yibit.

Yobibytes (YiB)

The yobibyte is a multiple of the unit byte (B) for digital information. The prefix yobi (Yi) represents multiplication by 10248, therefore: 1 yobibyte = 280 bytes = 1208925819614629174706176 bytes = 1024 zebibytes (ZiB). The yobibyte is represented by the symbol YiB.

Yottabits (Yb)

The yottabit is a multiple of the unit bit (b) for digital information or computer storage. The prefix yotta (Y) is defined in the International System of Units (SI) as a multiplier of 1024 (1 septillion, short scale), and therefore 1 yottabit = 1024 bits = 1000000000000000000000000 bits = 1000 zettabits (Zb). The yottabit is represented by the symbols Ybit or Yb.

Yottabytes (YB)

The yottabyte is a multiple of the unit byte (B) for digital information. The prefix yotta (Y) indicates multiplication by the eighth power of 1000 or 1024 and therefore one yottabyte is one septillion bytes (one long scale quadrillion). Therefore, 1 YB = 10008 bytes = 1024 bytes = 1000000000000000000000000 bytes = 1000 zettabytes (ZB) = 1 trillion terabytes (TB). The yottabyte is represented by the symbol YB.

Zebibits (Zib)

The zebibit is a multiple of the bit (b), a unit of digital information storage, prefixed by the standards-based multiplier zebi (Zi), a binary prefix meaning 270. Therefore, 1 zebibit = 270 bits = 1180591620717411303424 bits = 1024 exbibits (Eib). The zebibit is represented by the symbol Zibit.

Zebibytes (ZiB)

The zebibyte is a multiple of the unit byte (B) for digital information. The prefix zebi (Zi) represents multiplication by 10247, therefore: 1 zebibyte = 270 bytes = 1180591620717411303424bytes = 1024 exbibytes (EiB). The zebibyte is represented by the symbol ZiB.

Zettabits (Zb)

The zettabit is a multiple of the unit bit (b) for digital information or computer storage. The prefix zetta (Z) is defined in the International System of Units (SI) as a multiplier of 1021 (1 sextillion, short scale), and therefore 1 zettabit = 1021 bits = 1000000000000000000000 bits = 1000 exabits (Eb). The zettabit is represented by the symbols Zbit or Zb.

Zettabytes (ZB)

The zettabyte is a multiple of the unit byte (B) for digital information. The prefix zetta (Z) indicates multiplication by the seventh power of 1000 or 1021 in the International System of Units (SI). Therefore, 1 ZB = 10007 bytes = 1021 bytes = 1000000000000000000000 bytes = 1000 exabytes (EB) = 1 million petabytes (PB) = 1 billion terabytes (TB) = 1 trillion gigabytes (GB) and 1000 ZB = 1 yottabyte (YB). A zettabyte is one sextillion bytes (one long scale trilliard). The zettabyte is represented by the symbol ZB.

Attomho (a℧)

The attomho is a multiple of the unit mho (℧) for electrical conductance. The International System of Units (SI) defines the prefix atto (a) as a factor of 10-18 or 0.000000000000000001.

Attosiemens (aS)

The attosiemens is a multiple of the unit siemens (S) for electric conductance. The International System of Units (SI) defines the prefix atto (a) as a factor of 10-18 or 0.000000000000000001.

Centimho (c℧)

The centimho is a multiple of the unit mho (℧) for electrical conductance. The International System of Units (SI) defines the prefix centi (c) as a factor of one hundredth or 0.01.

Centisiemens (cS)

The centisiemens is a multiple of the unit siemens (S) for electric conductance. The International System of Units (SI) defines the prefix centi (c) as a factor of one hundredth or 0.01.

Decamho (da℧)

The decamho is a multiple of the unit mho (℧) for electrical conductance. The International System of Units (SI) defines the prefix deca (da) as a factor of ten.

Decasiemens (daS)

The decasiemens is a multiple of the unit siemens (S) for electric conductance. The International System of Units (SI) defines the prefix deca (da) as a factor of ten.

Decimho (d℧)

The decimho is a multiple of the unit mho (℧) for electrical conductance. The International System of Units (SI) defines the prefix deci (d) as a factor of one tenth or 0.1.

Decisiemens (dS)

The decisiemens is a multiple of the unit siemens (S) for electric conductance. The International System of Units (SI) defines the prefix deci (d) as a factor of one tenth or 0.1.

Examho (E℧)

The examho is a multiple of the unit mho (℧) for electrical conductance. The International System of Units (SI) defines the prefix exa (E) as a factor of 1018 or 1000000000000000000.

Exasiemens (ES)

The exasiemens is a multiple of the unit siemens (S) for electric conductance. The International System of Units (SI) defines the prefix exa (E) as a factor of 1018 or 1000000000000000000.

Femtomho (f℧)

The femtomho is a multiple of the unit mho (℧) for electrical conductance. The International System of Units (SI) defines the prefix femto (f) as a factor of 10-15 or 0.000000000000001.

Femtosiemens (fS)

The femtosiemens is a multiple of the unit siemens (S) for electric conductance. The International System of Units (SI) defines the prefix femto (f) as a factor of 10-15 or 0.000000000000001.

Gigamho (G℧)

The gigamho is a multiple of the unit mho (℧) for electrical conductance. The International System of Units (SI) defines the prefix giga (G) as a factor of 109 or 1000000000.

Gigasiemens (GS)

The gigasiemens is a multiple of the unit siemens (S) for electric conductance. The International System of Units (SI) defines the prefix giga (G) as a factor of 109 or 1000000000.

Hectomho (h℧)

The hectomho is a multiple of the unit mho (℧) for electrical conductance. The International System of Units (SI) defines the prefix hecto (h) as a factor of one hundred.

Hectosiemens (hS)

The hectosiemens is a multiple of the unit siemens (S) for electric conductance. The International System of Units (SI) defines the prefix hecto (h) as a factor of one hundred.

Kilomho (k℧)

The kilomho is a multiple of the unit mho (℧) for electrical conductance. The International System of Units (SI) defines the prefix kilo (k) as a factor of one thousand.

Kilosiemens (kS)

The kilosiemens is a multiple of the unit siemens (S) for electric conductance. The International System of Units (SI) defines the prefix kilo (k) as a factor of one thousand.

Megamho (M℧)

The megamho is a multiple of the unit mho (℧) for electrical conductance. The International System of Units (SI) defines the prefix mega (M) as a factor of 106 or 1000000.

Megasiemens (MS)

The megasiemens is a multiple of the unit siemens (S) for electric conductance. The International System of Units (SI) defines the prefix mega (M) as a factor of 106 or 1000000.

Mho (℧)

Another name for the mho (℧) is the siemens (S). As the reciprocal of one ohm (Ω), it is the word ohm spelled backwards, at the suggestion of Sir William Thomson (Lord Kelvin) in 1883.

Micromho (μ℧)

The micromho is a multiple of the unit mho (℧) for electrical conductance. The International System of Units (SI) defines the prefix micro (μ) as a factor of 10-6 or 0.000001.

Microsiemens (μS)

The microsiemens is a multiple of the unit siemens (S) for electric conductance. The International System of Units (SI) defines the prefix micro (μ) as a factor of 10-6 or 0.000001.

Millimho (m℧)

The millimho is a multiple of the unit mho (℧) for electrical conductance. The International System of Units (SI) defines the prefix milli (m) as a factor of one thousandth or 10-3 or 0.001.

Millisiemens (mS)

The millisiemens is a multiple of the unit siemens (S) for electric conductance. The International System of Units (SI) defines the prefix milli (m) as a factor of 10-3 or 0.001.

Nanomho (n℧)

The nanomho is a multiple of the unit mho (℧) for electrical conductance. The International System of Units (SI) defines the prefix nano (n) as a factor of 10-9 or 0.000000001.

Nanosiemens (nS)

The nanosiemens is a multiple of the unit siemens (S) for electric conductance. The International System of Units (SI) defines the prefix nano (n) as a factor of 10-9 or 0.000000001.

Petamho (P℧)

The petamho is a multiple of the unit mho (℧) for electrical conductance. The International System of Units (SI) defines the prefix peta (P) as a factor of 1015 or 1000000000000000.

Petasiemens (PS)

The petasiemens is a multiple of the unit siemens (S) for electric conductance. The International System of Units (SI) defines the prefix peta (P) as a factor of 1015 or 1000000000000000.

Picomho (p℧)

The picomho is a multiple of the unit mho (℧) for electrical conductance. The International System of Units (SI) defines the prefix pico (p) as a factor of 10-12 or 0.000000000001.

Picosiemens (pS)

The picosiemens is a multiple of the unit siemens (S) for electric conductance. The International System of Units (SI) defines the prefix pico (p) as a factor of 10-12 or 0.000000000001.

Siemens (S)

The siemens is an SI derived unit of electric conductance, electric susceptance, and electric admittance. Conductance, susceptance, and admittance are the reciprocals of resistance, reactance, and impedance respectively.

Teramho (T℧)

The teramho is a multiple of the unit mho (℧) for electrical conductance. The International System of Units (SI) defines the prefix tera (T) as a factor of 1012 or 1000000000000.

Terasiemens (TS)

The terasiemens is a multiple of the unit siemens (S) for electric conductance. The International System of Units (SI) defines the prefix tera (T) as a factor of 1012 or 1000000000000.

Yoctomho (y℧)

The yoctomho is a multiple of the unit mho (℧) for electrical conductance. The International System of Units (SI) defines the prefix yocto (y) as a factor of 10-24 or 0.000000000000000000000001.

Yoctosiemens (yS)

The yoctosiemens is a multiple of the unit siemens (S) for electric conductance. The International System of Units (SI) defines the prefix yocto (y) as a factor of 10-24 or 0.000000000000000000000001.

Yottamho (Y℧)

The yottamho is a multiple of the unit mho (℧) for electrical conductance. The International System of Units (SI) defines the prefix yotta (Y) as a factor of 1024 or 1000000000000000000000000.

Yottasiemens (YS)

The yottasiemens is a multiple of the unit siemens (S) for electric conductance. The International System of Units (SI) defines the prefix yotta (Y) as a factor of 1024 or 1000000000000000000000000.

Zeptomho (z℧)

The zeptomho is a multiple of the unit mho (℧) for electrical conductance. The International System of Units (SI) defines the prefix zepto (z) as a factor of 10-21 or 0.000000000000000000001.

Zeptosiemens (zS)

The zeptosiemens is a multiple of the unit siemens (S) for electric conductance. The International System of Units (SI) defines the prefix zepto (z) as a factor of 10-21 or 0.000000000000000000001.

Zettamho (Z℧)

The zettamho is a multiple of the unit mho (℧) for electrical conductance. The International System of Units (SI) defines the prefix zetta (Z) as a factor of 1021 or 1000000000000000000000.

Zettasiemens (ZS)

The zettasiemens is a multiple of the unit siemens (S) for electric conductance. The International System of Units (SI) defines the prefix zetta (Z) as a factor of 1021 or 1000000000000000000000.

Abohm (abΩ)

The abohm is the derived unit of electrical resistance in the emu-cgs (centimeter-gram-second) system of units where emu stands for electromagnetic units.

Attoohm (aΩ)

The attoohm is a multiple of the unit ohm (Ω) for electrical resistance. The international System of Units (SI) defines the prefix atto (a) as a factor of 10-18 or 0.000000000000000001.

Centiohm (cΩ)

The centiohm is a multiple of the unit ohm (Ω) for electrical resistance. The international System of Units (SI) defines the prefix centi (c) as a factor of one hundredth or 0.01.

Decaohm (daΩ)

The decaohm is a multiple of the unit ohm (Ω) for electrical resistance. The international System of Units (SI) defines the prefix deca (da) as a factor of ten.

Deciohm (dΩ)

The deciohm is a multiple of the unit ohm (Ω) for electrical resistance. The international System of Units (SI) defines the prefix deci (d) as a factor of one tenth or 0.1.

Exaohm (EΩ)

The exaohm is a multiple of the unit ohm (Ω) for electrical resistance. The international System of Units (SI) defines the prefix exa (E) as a factor of 1018 or 1000000000000000000.

Femtoohm (fΩ)

The femtoohm is a multiple of the unit ohm (Ω) for electrical resistance. The international System of Units (SI) defines the prefix femto (f) as a factor of 10-15 or 0.000000000000001.

Gigaohm (GΩ)

The gigaohm is a multiple of the unit ohm (Ω) for electrical resistance. The international System of Units (SI) defines the prefix giga (G) as a factor of 109 or 1000000000.

Hectoohm (hΩ)

The hectoohm is a multiple of the unit ohm (Ω) for electrical resistance. The international System of Units (SI) defines the prefix hecto (h) as a factor of one hundred.

Kiloohm (kΩ)

The kiloohm is a multiple of the unit ohm (Ω) for electrical resistance. The international System of Units (SI) defines the prefix kilo (k) as a factor of one thousand.

Megaohm (MΩ)

The megaohm is a multiple of the unit ohm (Ω) for electrical resistance. The international System of Units (SI) defines the prefix mega (M) as a factor of 106 or 1000000.

Microohm (μΩ)

The microohm is a multiple of the unit ohm (Ω) for electrical resistance. The international System of Units (SI) defines the prefix micro (μ) as a factor of 10-6 or 0.000001.

Milliohm (mΩ)

The milliohm is a multiple of the unit ohm (Ω) for electrical resistance. The international System of Units (SI) defines the prefix milli (m) as a factor of one thousandth or 10-3 or 0.001.

Nanoohm (nΩ)

The nanoohm is a multiple of the unit ohm (Ω) for electrical resistance. The international System of Units (SI) defines the prefix nano (n) as a factor of one billionth or 10-9 or 0.000000001.

Ohm (Ω)

The ohm (Ω) is the SI derived unit of electrical resistance, named after German physicist Georg Simon Ohm.

Petaohm (PΩ)

The petaohm is a multiple of the unit ohm (Ω) for electrical resistance. The international System of Units (SI) defines the prefix peta (P) as a factor of 1015 or 1000000000000000.

Picoohm (pΩ)

The picoohm is a multiple of the unit ohm (Ω) for electrical resistance. The international System of Units (SI) defines the prefix pico (p) as a factor of 10-12 or 0.000000000001.

Statohm (statΩ)

The statohm is the unit of electrical resistance in the electrostatic system of units which was part of the CGS system of units based upon the centimeter (cm), gram (g) and second (s). 1 statohm = 8.987551787x1011 ohms (Ω).

Teraohm (TΩ)

The teraohm is a multiple of the unit ohm (Ω) for electrical resistance. The international System of Units (SI) defines the prefix tera (T) as a factor of 1012 or 1000000000000.

Volt/Ampere (V/A)

Volts (V) per ampere (A) is equivalent to the SI derived unit of electrical resistance the ohm (Ω). Therefore, 1 volt per ampere is equivalent to 1 ohm. The symbol for the volt per ampere is V/A.

Yoctoohm (yΩ)

The yoctoohm is a multiple of the unit ohm (Ω) for electrical resistance. The international System of Units (SI) defines the prefix yocto (y) as a factor of 10-24 or 0.000000000000000000000001.

Yottaohm (YΩ)

The yottaohm is a multiple of the unit ohm (Ω) for electrical resistance. The international System of Units (SI) defines the prefix yotta (Y) as a factor of 1024 or 1000000000000000000000000.

Zeptoohm (zΩ)

The zeptoohm is a multiple of the unit ohm (Ω) for electrical resistance. The international System of Units (SI) defines the prefix zepto (z) as a factor of 10-21 or 0.000000000000000000001.

Zettaohm (ZΩ)

The zettaohm is a multiple of the unit ohm (Ω) for electrical resistance. The international System of Units (SI) defines the prefix zetta (Z) as a factor of 1021 or 1000000000000000000000.

Attohenry (aH)

The attohenry is a multiple of the unit henry (H) for inductance. The International System of Units (SI) defines the prefix atto (a) as a factor of 10-18 or 0.000000000000000001.

Centihenry (cH)

The centihenry is a multiple of the unit henry (H) for inductance. The International System of Units (SI) defines the prefix centi (c) as a factor of one hundredth or 0.01.

Decahenry (daH)

The decahenry is a multiple of the unit henry (H) for inductance. The International System of Units (SI) defines the prefix deca (da) as a factor of ten.

Decihenry (dH)

The decihenry is a multiple of the unit henry (H) for inductance. The International System of Units (SI) defines the prefix deci (d) as a factor of one tenth or 0.1.

Exahenry (EH)

The exahenry is a multiple of the unit henry (H) for inductance. The International System of Units (SI) defines the prefix exa (E) as a factor of 1018 or 1000000000000000000.

Femtohenry (fH)

The femtohenry is a multiple of the unit henry (H) for inductance. The International System of Units (SI) defines the prefix femto (f) as a factor of 10-15 or 0.000000000000001.

Gigahenry (GH)

The gigahenry is a multiple of the unit henry (H) for inductance. The International System of Units (SI) defines the prefix giga (G) as a factor of 109 or 1000000000.

Hectohenry (hH)

The hectohenry is a multiple of the unit henry (H) for inductance. The International System of Units (SI) defines the prefix hecto (h) as a factor of one hundred. Per this definition, one hectohenry is 100 henry.

Henry (H)

The henry (H) is the SI derived unit of electrical inductance. If a current of 1 ampere (A) flowing through a coil produces flux linkage of 1 weber (Wb) turn, that coil has a self-inductance of 1 henry.

Kilohenry (kH)

The kilohenry is a multiple of the unit henry (H) for inductance. The International System of Units (SI) defines the prefix kilo (k) as a factor of one thousand.

Megahenry (MH)

The megahenry is a multiple of the unit henry (H) for inductance. The International System of Units (SI) defines the prefix mega (M) as a factor of 106 or 1000000.

Microhenry (μH)

The microhenry is a multiple of the unit henry (H) for inductance. The International System of Units (SI) defines the prefix micro (μ) as a factor of 10-6 or 0.000001.

Millihenry (mH)

The millihenry is a multiple of the unit henry (H) for inductance. The International System of Units (SI) defines the prefix milli (m) as a factor of 10-3 or 0.001.

Nanohenry (nH)

The nanohenry is a multiple of the unit henry (H) for inductance. The International System of Units (SI) defines the prefix nano (n) as a factor of 10-9 or 0.000000001.

Petahenry (PH)

The petahenry is a multiple of the unit henry (H) for inductance. The International System of Units (SI) defines the prefix peta (P) as a factor of 1015 or 1000000000000000.

Picohenry (pH)

The picohenry is a multiple of the unit henry (H) for inductance. The International System of Units (SI) defines the prefix pico (p) as a factor of 10-12 or 0.000000000001.

Terahenry (TH)

The terahenry is a multiple of the unit henry (H) for inductance. The International System of Units (SI) defines the prefix tera (T) as a factor of 1012 or 1000000000000.

Yoctohenry (yH)

The yoctohenry is a multiple of the unit henry (H) for inductance. The International System of Units (SI) defines the prefix yocto (y) as a factor of 10-24 or 0.000000000000000000000001.

Yottahenry (YH)

The yottahenry is a multiple of the unit henry (H) for inductance. The International System of Units (SI) defines the prefix yotta (Y) as a factor of 1024 or 1000000000000000000000000.

Zeptohenry (zH)

The zeptohenry is a multiple of the unit henry (H) for inductance. The International System of Units (SI) defines the prefix zepto (z) as a factor of 10-21 or 0.000000000000000000001.

Zettahenry (ZH)

The zettahenry is a multiple of the unit henry (H) for inductance. The International System of Units (SI) defines the prefix zetta (Z) as a factor of 1021 or 1000000000000000000000.

Atto (a)

Atto is a SI unit prefix in the metric system denoting a factor of 10-18 or 0.000000000000000001. It is represented by the prefix atto or the symbol a.

Centi (c)

Centi is a SI unit prefix in the metric system denoting a factor of one hundredth. Proposed in 1793 and adopted in 1795, the prefix comes from the Latin term centum, meaning hundred.

Deca (da)

Deca is a decimal SI unit prefix in the metric system denoting a factor of ten. The term is derived from the Greek word déka (δέκα) meaning ten.

Deci (d)

Deci is a decimal SI unit prefix in the metric system denoting a factor of one tenth. Proposed in 1793 and adopted in 1795, the prefix comes from the Latin term decimus, meaning tenth.

Exa (E)

Exa is a decimal SI unit prefix in the metric system denoting 1018 or 1000000000000000000. It is represented by the prefix exa or the symbol E.

Femto (f)

Femto is a SI unit prefix in the metric system denoting a factor of 10-15. It is derived from the Danish word femten, meaning fifteen. It is represented by the prefix femto or the symbol f.

Giga (G)

Giga is a SI unit prefix in the metric system denoting a factor of a billion (109 or 1000000000). It is represented by the prefix giga or the symbol G.

Hecto (h)

Hecto is a decimal SI unit prefix in the metric system denoting a factor of one hundred. It was adopted as a multiplier in 1795, and comes from the Greek term Hekaton (ἑκατόν), meaning hundred.

Kilo (k)

Kilo is a decimal SI unit prefix in the metric system denoting multiplication by one thousand (103). The prefix kilo is derived from the Greek word chilioi (χίλιοι), meaning thousand. It is represented by the prefix kilo or the symbol k.

Mega (M)

Mega is a SI unit prefix in metric systems of units denoting a factor of one million (106 or 1000000). It is represented by the prefix mega or the symbol M.

Micro (µ)

Micro is a SI unit prefix in the metric system denoting a factor of 10-6 (one millionth). It is represented by the prefix micro or the symbol µ.

Milli (m)

Milli is a SI unit prefix in the metric system denoting a factor of one thousandth (10−3). It is represented by the prefix milli or the symbol m.

Nano (n)

Nano is a SI unit prefix meaning one billionth. Used primarily with the metric system, this prefix denotes a factor of 10-9 or 0.000000001. It is represented by the prefix nano or the symbol n.

One (1)

One, also called unit, and unity is a number, and a numerical digit used to represent that number in numerals. It represents a single entity, the unit of counting or measurement.

Peta (P)

Peta is a decimal SI unit prefix in the metric system denoting multiplication by 1015 (1000000000000000). It is represented by the prefix peta or the symbol P.

Pico (p)

Pico is a SI unit prefix in the metric system denoting a factor of 10-12 (0.000000000001), or one trillionth in short scale nomenclature. It is represented by the prefix pico or the symbol p.

Tera (T)

Tera is a SI unit prefix in the metric system denoting multiplication by 1012 or 1000000000000 (one trillion short scale, one billion long scale). It is represented by the prefix tera or the symbol T.

Yocto (y)

Yocto is a SI unit prefix in the metric system denoting a factor of 10-24 or 0.000000000000000000000001. It is represented by the prefix yocto or the symbol y.

Yotta (Y)

Yotta is the largest decimal unit prefix in the metric system, denoting a factor of 1024 (1000000000000000000000000), or one septillion. It is represented by the prefix yotta or the symbol Y.

Zepto (z)

Zepto is a SI unit prefix in the metric system denoting a factor of 10-21 or 0.000000000000000000001. It is represented by the prefix zepto or the symbol z.

Zetta (Z)

Zetta is a decimal SI unit prefix in the metric system denoting a factor of 1021 or 1000000000000000000000. It is represented by the prefix zetta or the symbol Z.

Degrees Celsius or Centigrade (°C)

Celsius or Centigrade is a scale for measuring temperature, in which water freezes at 0 degrees and boils at 100 degrees. It is represented by the symbol °C.

Degrees Delisle (°De)

The Delisle scale is a temperature scale invented in 1732 by the French astronomer Joseph-Nicolas Delisle (1688–1768). The Delisle degree is -2/3 of a kelvin (K) (or a degree Celsius or Centigrade).

Degrees Fahrenheit (°F)

Fahrenheit is a temperature scale, in which water freezes at 32 degrees and boils at 212 degrees. It is represented by the symbol °F.

Degrees Newton (°N)

The Newton scale is a temperature scale devised by Isaac Newton in 1701. He called his device a thermometer, but he did not use the term temperature, instead electing to use degrees of heat (gradus caloris).

Degrees Rankine (°Ra)

Rankine is a thermodynamic (absolute) temperature scale named after the Scottish engineer and physicist William John Macquorn Rankine, who proposed it in 1859.

Degrees Réaumur (°Ré)

The Réaumur scale also known as the octogesimal division, is a temperature scale for which the freezing and boiling points of water are defined as 0 and 80 degrees respectively.

Degrees Rømer (°Rø)

The Rømer scale also known as Romer or Roemer, is a temperature scale named after the Danish astronomer Ole Christensen Rømer, who proposed it in 1701.

Kelvin (K)

Kelvin is an absolute thermodynamic temperature scale in which the magnitude matches the Celsius scale meaning a change of one degree Celsius corresponds with an increase of one kelvin.

Abvolt (abV)

The abvolt (abV) is the unit of potential difference in the CGS-EMU system of units. It corresponds to 10−8 volts (V) in the SI system and 1/ccgs statvolt (statV) ≈ 3.3356×10−11 statvolt in the CGS-ESU system.

Attovolt (aV)

The attovolt is a multiple of the unit volt (V) for voltage. The International System of Units (SI) defines the prefix atto (a) as a factor of 10-18 or 0.000000000000000001.

Centivolt (cV)

The centivolt is a multiple of the unit volt (V) for voltage. The International System of Units (SI) defines the prefix centi (c) as a factor of one hundredth or 0.01.

Decavolt (daV)

The decavolt is a multiple of the unit volt (V) for voltage. The International System of Units (SI) defines the prefix deca (da) as a factor of ten.

Decivolt (dV)

The decivolt is a multiple of the unit volt (V) for voltage. The International System of Units (SI) defines the prefix deci (d) as a factor of one tenth or 0.1.

Exavolt (EV)

The exavolt is a multiple of the unit volt (V) for voltage. The International System of Units (SI) defines the prefix exa (E) as a factor of 1018 or 1000000000000000000.

Femtovolt (fV)

The femtovolt is a multiple of the unit volt (V) for voltage. The International System of Units (SI) defines the prefix femto (f) as a factor of 10-15 or 0.000000000000001.

Gigavolt (GV)

The gigavolt is a multiple of the unit volt (V) for voltage. The International System of Units (SI) defines the prefix giga (G) as a factor of 109 or 1000000000.

Hectovolt (hV)

The hectovolt is a multiple of the unit volt (V) for voltage. The International System of Units (SI) defines the prefix hecto (h) as a factor of one hundred.

Kilovolt (kV)

The kilovolt is a multiple of the unit volt (V) for voltage. The International System of Units (SI) defines the prefix kilo (k) as a factor of one thousand.

Megavolt (MV)

The megavolt is a multiple of the unit volt (V) for voltage. The International System of Units (SI) defines the prefix mega (M) as a factor of one million or 106 or 1000000.

Microvolt (μV)

The microvolt is a multiple of the unit volt (V) for voltage. The International System of Units (SI) defines the prefix micro (μ) as a factor of one millionth or 10-6 or 0.000001.

Millivolt (mV)

The millivolt is a multiple of the unit volt (V) for voltage. The International System of Units (SI) defines the prefix milli (m) as a factor of one thousandth or 10-3 or 0.001.

Nanovolt (nV)

The nanovolt is a multiple of the unit volt (V) for voltage. The International System of Units (SI) defines the prefix nano (n) as a factor of one billionth or 10-9 or 0.000000001.

Petavolt (PV)

The petavolt is a multiple of the unit volt (V) for voltage. The International System of Units (SI) defines the prefix peta (P) as a factor of 1015 or 1000000000000000.

Picovolt (pV)

The picovolt is a multiple of the unit volt (V) for voltage. The International System of Units (SI) defines the prefix pico (p) as a factor of 10-12 or 0.000000000001.

Statvolt (statV)

The statvolt is a unit of voltage and electrical potential used in the CGS-ESU and gaussian systems of units. In terms of its relation to the SI units, one statvolt corresponds to exactly ccgs 10−8 volts (V) or 299.792458 volts.

Teravolt (TV)

The teravolt is a multiple of the unit volt (V) for voltage. The International System of Units (SI) defines the prefix tera (T) as a factor of 1012 or 1000000000000.

Volt (V)

The volt (V) is the derived unit for electric potential, electric potential difference (voltage), and electromotive force. It is named after the Italian physicist Alessandro Volta (1745–1827).

Yoctovolt (yV)

The yoctovolt is a multiple of the unit volt (V) for voltage. The International System of Units (SI) defines the prefix yocto (y) as a factor of 10-24 or 0.000000000000000000000001.

Yottavolt (YV)

The yottavolt is a multiple of the unit volt (V) for voltage. The International System of Units (SI) defines the prefix yotta (Y) as a factor of 1024 or 1000000000000000000000000.

Zeptovolt (zV)

The zeptovolt is a multiple of the unit volt (V) for voltage. The International System of Units (SI) defines the prefix zepto (z) as a factor of 10-21 or 0.000000000000000000001.

Zettavolt (ZV)

The zettavolt is a multiple of the unit volt (V) for voltage. The International System of Units (SI) defines the prefix zetta (Z) as a factor of 1021 or 1000000000000000000000.

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