Áit ❯ Gach Sainmhínithe ❯ Aonad ❯ Méadar (M) Sainmhíniú aonaid
Méadar (M) Sainmhíniú aonaid
The meter otherwise referred to internationally as the metre is the base unit of length & distance in the International System of Units (SI). The meter is represented by the symbol m.
The meter was originally defined in 1791 by the French National Assembly as one ten-millionth of the distance from the equator to the North Pole along a great circle. Therefore the Earth's circumference is approximately 40000 kilometers (km).
In 1799, the meter was redefined in terms of a prototype meter bar. The actual bar used was changed in 1889. In 1960, the meter was redefined in terms of a certain number of wavelengths of a certain emission line of krypton-86.
The current definition was adopted in 1983 and modified slightly in 2002 to clarify that the meter is a measure of proper length. From 1983 until 2019, the meter was formally defined as the length of the path travelled by light in a vacuum in 1⁄299792458 of a second (s). After the 2019 redefinition of the SI base units, this definition was rephrased to include the definition of a second in terms of the caesium frequency ΔνCs.
SI Multiples
A table of various length & distance meter units derived from SI multiples:
Submultiples |
Multiples |
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Scientific Notation |
Luach |
Réimeas |
Ainmnigh |
Scientific Notation |
Luach |
Réimeas |
Ainmnigh |
10-1 m |
0.1 m |
Deci (d) | Decimeter (DM) | 101 m |
10 m |
Deca (DA) | Decameter (damba) |
10-2 m |
0.01 m |
Centi (c) | Ceintiméadar (CM) | 102 m |
100 m |
Hecto (H) | Hectometer (HM) |
10-3 m |
0.001 m |
Milli (M) | Milliméadar (mm) | 103 m |
1000 m |
Kilo (K) | Ciliméadar (km) |
10-6 m |
0.000001 m |
Micrea (µ) | Micrometer (µm) | 106 m |
1000000 m |
Mega (m) | Megameter (mm) |
10-9 m |
0.000000001 m |
Nano (n) | Nanaiméadar (NM) | 109 m |
1000000000 m |
Giga (G) | Gigameter (GM) |
10-12 m |
0.000000000001 m |
Pico (P) | Picometer (PM) | 1012 m |
1000000000000 m |
Tera (t) | Terameter (TM) |
10-15 m |
0.000000000000001 m |
Femto (F) | Femtometer (FM) | 1015 m |
1000000000000000 m |
PETA (P) | Petameter (PM) |
10-18 m |
0.000000000000000001 m |
Atto (a) | Atometer (Am) | 1018 m |
1000000000000000000 m |
Exa (e) | Examer (EM) |
10-21 m |
0.000000000000000000001 m |
Zepto (z) | Zeptometer (ZM) | 1021 m |
1000000000000000000000 m |
Zetta (Z) | Zettameter (ZM) |
10-24 m |
0.000000000000000000000001 m |
Yocto (y) | Yoctometer (YM) | 1024 m |
1000000000000000000000000 m |
Yotta (Y) | Yottameter (YM) |
10-27 m |
0.000000000000000000000000001 m |
Ronto (r) | Rontometer (rm) | 1027 m |
1000000000000000000000000000 m |
Ronna (R) | Ronnameter (Rm) |
10-30 m |
0.000000000000000000000000000001 m |
Quecto (q) | Quectometer (qm) | 1030 m |
1000000000000000000000000000000 m |
Quetta (Q) | Quettameter (Qm) |
Sainmhínithe Fad & Fad eile
Clóghrafaíocht agate (agate)
Alen Danmhairgis (Alen)
Alen Críoch Lochlann (Alen)
Alen Sualainnis (Alen)
Angstrom (Å)
Fad na n-arm (fad arm)
Arpent Canada (Arpent)
Arpent France (Arpent)
Arsheen Russia (agus аи́н)
Arshin Iran (Arshin)
Arshin na hIaráice (Arshin)
Aonad Réalteolaíoch (AU)
- Atometer (Am)
Bambú (bambú)
Barlecorn (Barleycorn)
Beard-dara (Beard-Second)
Spás beach (spás beach)
Bicron (μμ)
Bloc East USA (Block-East-USA)
Bloc Midwest USA (Bloc-Midwest-USA)
Bloc Theas & Iarthar na Stát Aontaithe (bloc-theas-siar)
Bohr (a
0 )Braccio Iodáil (Braccio)
BRATASA Argentina (BrazA)
Braz na Spáinne (BrazA)
Braze Texas (BrazA)
Beart cnaipe (beart cnaipe)
Cábla na Breataine (cábla)
Cábla Stáit Aontaithe Mheiriceá (cábla)
Calibre (Caliber)
Canna (Canna)
Rinn Foot (CF)
Rinn Inch (CI)
Rinn Rood (CR)
- Ceintiméadar (CM)
Centímetro (CM)
Ch'ih China (市 尺))
Slabhra Gunter & Suirbhé (Slabhra)
Slabhra Ramsden & Innealtóir (slabhra)
Cos na Síne (市 尺)
Orlach na Síne (市寸)
Míle Síneach (市 里)
Clós na Síne (市丈)
Bloc na Cathrach East USA (Cathair-Block-East-USA)
Bloc na Cathrach Midwest USA (Cathair-Block-Midwest-USA)
Bloc na Cathrach Theas & Iarthar Stáit Aontaithe Mheiriceá (Cathair-Block-South-West-USA)
Cliceáil Míleata Stáit Aontaithe Mheiriceá (cliceáil)
Cuadra (Cuadra)
Cuadra Argentina (Cuadra)
Cubit Éigipteach (Cubit)
Cubit English (Cubit)
Cubit Rómhánach (Cubit)
Cubit Royal Egyptian (Cubit)
Cuerda (Cuerda)
- Decameter (damba)
- Decimeter (DM)
- Dekameter (damba)
Pointe Didot (Didot-Point)
Digit (Digit)
Diraa Éigipt (Diraa)
Dong Vítneam (dong)
Priontáil Douzième (Douzième)
Douzième Watchmaking (Douzième)
Dra Iraq (DRA)
Dra Russia (Dra)
El Ollainnis (EL)
Ell English (ELL)
Ell Scotland (ELL)
An Ghearmáin Elle (ELLE)
Elle Vienna (Elle)
Em (em)
Estadio Portaingéil (Estadio)
Estadio Spáinn (Estadio)
- Examer (EM)
An Ostair FADEN (FADEN)
Faden Switzerland (FADEN)
Fall English (Fall)
Fall Scotland (Fall)
Fathom (fath)
Fathom Ancient (Fath)
Faust Ungáir (Faust)
- Femtometer (FM)
Fermi (FM)
Finger (méar)
Fingerbreadth (méarleagan)
Fist (dorn)
FOD (FOD)
Chos (ft)
Crúibe na hÉigipte (ft)
Crúibe na Fraince (ft)
Crúibe na hIaráice (ft)
An Ísiltír Crúibe (FT)
Crúibe roimh 1963 Ceanada (FT)
Crúibe na Róimhe (Ft)
Suirbhé Crúibe (FT)
Field Field Canada (Field-Field-Canada)
Páirc Peile Comhlánaigh SAM (Field-Field-Compute-USA)
Field Field USA (Field-Field-USA)
Furlong International (Fur)
Suirbhé Furlong (Fur)
Fuss Gearmáinis (fuss)
Bliain Gigalight (Gly)
- Gigameter (GM)
GigAparsec (GPC)
Eye Gnat (Gnats-Eye)
Goad (Goad)
Gry (Gry)
Leithead na Gruaige (Ribí Ribí)
Lámh Neamhchothromaíochta (Lámh-Non-Co-chomhoiriúnaithe)
Lámh láimhe (Lámh láimhe)
Hat Cambodia (Hat)
- Hectometer (HM)
Heer (Heer)
Hubble (Hubble)
HVAT Cróit (HVAT)
Orlach (isteach)
Ken Japan (Ken)
Kerat (Kerat)
Kilofoot (KFT)
- Ciliméadar (km)
KiloParsec (KPC)
Kiloyard (KYD)
Cineálta (cineálta)
An Ostair Klafter (Klafter)
Klafter an Eilvéis (Klafter)
Klick (Klick)
Kyu (Kyu)
Comórtas Lap (LAP)
Lap sean (lap)
Linn Oilimpeach Lap (LAP)
Sraith ársa Ceilteach (sraithe)
League Nautical (League)
League Nautical UK (League)
Reacht na sraithe Stáit Aontaithe Mheiriceá (League)
League UK (League)
LEAP (LEAP)
Legoa (Legoa)
Legua (Legua)
Legua Post-1568 Spáinnis (Legua)
Legua réamh-1568 Spáinnis (Legua)
Legua Texas (Legua)
Li Ancient China (釐, T, 厘, S)
Li Imperial China (釐, T, 厘, S)
Li Modern China (釐, T, 厘, S)
Lieue France (Lieue)
Lieue Metric an Fhrainc (Lieue)
Lieue Nautical An Fhrainc (Lieue)
Lá Solais (LD)
Uair an chloig solais (LH)
Nóiméad éadrom (lmin)
Mí Solais (LM)
An dara solas (LS)
Seachtain an tSolais (LWK)
Bliain Solais (ly)
Ligne France (Ligne)
Ligne na hEilvéise (ligne)
Líne (Li)
Líne Beag (Li)
Cos líneach (LFT)
Nasc Gunter & Suirbhé (nasc)
Nasc Ramden & Innealtóir (nasc)
Lug (lug)
Lug iontach (lug)
Marathon (Maratón)
Mark Twain (Mark-Twain)
Bliain Megalight (Mly)
- Megameter (mm)
Megaparsec (MPC)
Meile Austria (Meile)
Meile geographische (meile)
Meile Thuaidh an Ghearmáin (Meile)
- Méadar (M)
Míle méadrach (míle méadrach)
Ardscoil Mhíle Méadrach (míle méadrach)
Metro (Metro)
Microinch (μIN)
- Micriméadar (μM)
Micromicron (μMM)
Micron (μM)
Miglio (miglio)
Miil mijl ársa na Sualainne (miil-mijl)
Miil Mijl Danmhairgis (Miil-Mijl)
Miil Mijl An Danmhairg (Miil-Mijl)
MIL (MIL)
Mil Sweden (MIL)
Míle (MI)
Míle An tSean -Bhreatain (MI)
Mile Ársa Rómhánach (MI)
Mile International (MI)
Mile Irish (MI)
Míle farraige & Idirnáisiúnta (MI)
Mile Nautical UK (MI)
Mile Nautical US (MI)
Míle Albanach (MI)
Reacht Mile (MI)
Mile Reacht Idirnáisiúnta (MI)
Reacht Mile US (MI)
Suirbhé Mile (MI)
Milha Portaingéilis (Milha)
Luas míleata (luas míleata)
Luas míleata am dúbailte (luas míleata)
Milla Spáinnis (Milla)
Fraincis Mille (Mille)
Milliare Rome (Milliare)
- Milliméadar (mm)
Millimicron (MμM)
Milímetro (Milímetro)
Mkono Africa (Mkono)
Moot India (moot)
Myriameter (mym)
Ingne (ingne)
- Nanaiméadar (NM)
Nanon (Nanon)
Pace Great (Pace)
Pace Rómhánach (Pace)
Palm Britain & Rómhánach Mion (Palm)
Ollainnis Palm (Palm)
Palm Us & Roman Major (Palm)
Portaingéilis Palmo (Palmo)
Palmo Spáinnis (Palmo)
Palmo Texas (Palmo)
Parasang (Parasang)
Foot Paris (pied du roi)
Parsec (PC)
PEORTHAÍOCHT PE (PE)
Pearl (Pearl)
Péirse (péirse)
Perch Ireland (péirse)
Pertica (Pertica)
PES (PES)
- Petameter (PM)
Pica (Pica)
- Picometer (PM)
Pie Argentina (pie)
Pie Iodáilis (pie)
Pie Spáinnis (pie)
Pie Texas (Pie)
Pied du Roi (Foot Paris)
PIK (PIK)
An Ghréig Pike (Pike)
Pointe Adobe (Pt)
Point Britain & US (PT)
Pointe Didot (Pt)
Point Tex (Pt)
Cuaille (cuaille)
Portaingéilis Polegada (Polegada)
Pouce (pouce)
PU China (PU)
Pulgada (Pulgada)
Pygme Greece (Pygme)
Q (Q)
Ceathrú (Quadrant)
Ceathrú (ceathrú)
Éadach ráithe (ceathrú)
Priontáil Ráithe (Ráithe)
- Quectometer (qm)
- Quettameter (Qm)
Raon (raon)
Reed Israel (Reed)
RI an tSeapáin (RI)
Ridge (Ridge)
Abhainn na hÉigipte (ITRW)
Rod International (RO)
Suirbhé Rod (RO)
Roede (Roede)
- Ronnameter (Rm)
- Rontometer (rm)
Rood (RO)
Rópa (rópa)
Crúibe Ríoga (pied du roi)
Rute an Ghearmáin (Rute)
Sadzhen (Sadzhen)
Sagene (Sagene)
Cos na hAlban (Fit)
Míle na hAlban (míle Albanach)
Cosúil le (cosúil)
Shackle (Shackle)
Seafta (seafta)
Seafta ársa (seafta)
Shaku (Shaku)
Siriometer (Siriometer)
Smoot (smoot)
Span (réise)
Spat (spat)
Staidiam (Staidiam)
Céim (Céim)
Bata (bata)
Scéal (scéal)
Stride Great (Stride)
Stride Rómhánach (stride)
T'sun (t'sun)
Tenthmeter (A)
- Terameter (TM)
Thou (mil)
Toise (T)
Township (Township)
Tu (TU)
Twain (Twain)
Twip (TWIP)
U (U)
Vara California (Vara)
Vara Mexico (Vara)
Vara Portaingéilis (Vara)
Vara Meiriceá Theas (Vara)
Vara Spáinnis (Vara)
Vara Texas (Vara)
Verge (imeall)
Vershok (Vershok)
Verst (верста)
An Téalainn Wah (ว.)
Werst (Werst)
X aonad (xu)
Clós (Yd)
- Yoctometer (YM)
- Yottameter (YM)
- Zeptometer (ZM)
- Zettameter (ZM)
An Ghearmáin Zoll (Zoll)
Zoll Switzerland (Zoll)
Convert to Another Length & Distance Unit
Sainmhínithe gaolmhara
Séanadh
Cé go bhfuil gach iarracht déanta chun an tiontaire aonaid seo a thástáil, ní féidir linn a bheith faoi dhliteanas i leith aon damáistí speisialta, teagmhasacha, indíreacha nó iarmhartacha nó caillteanais airgeadaíochta de chineál ar bith a eascraíonn as nó i dtaca le húsáid aon cheann de na huirlisí tiontaire agus faisnéis a fuarthas ón láithreán gréasáin seo. Cuirtear an tiontaire aonaid seo ar fáil mar sheirbhís duit, bain úsáid as do riosca féin le do thoil. Ná bain úsáid as ríomhanna le haghaidh aon rud ina bhféadfadh cailliúint saoil, airgead, maoin, srl.
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Foinsíocht
“Metre.” Wikipedia, Wikimedia Foundation, 10 Oct. 2020, en.wikipedia.org/wiki/Metre.