All Calculators
Browse our growing collection of calculators that you may find useful for solving particular problems:
Coin Flip Probability
Calculate the probability of obtaining a fixed number of heads or tails from a fixed number of tosses. Also calculate the probability of getting at least or at most a certain amount of heads or tails from a set number of tosses.
Decimal to Percentage
Calculate the equivalent percentage from its associated decimal value.
Hourly to Salary
Calculate what your hourly pay equates to in terms of an annual salary. Quickly calculate a breakdown of your hourly, daily, weekly, biweekly, monthly, quarterly, yearly, pay or salary and time worked.
Mulch
Calculate how much mulch you need before you make your trip out to the store to buy some. Quickly calculate a breakdown of the various quantities of mulch from dimensions or from an area.
Percentage
This percentage calculator is useful for determining the percentage increase or decrease between two numbers, and numbers as they relate to a percentage and vice versa. Common uses for this calculator include calculating taxes, statistics, investment returns or losses, and tips on a restaurant bill.
Percentage Change
The percentage change calculator is used to calculate the exact percentage increase or percentage decrease from one initial value or number to another final value.
Percentage Error
Calculate the relative percentage error between a true value and the observed value found in a measurement.
Percentage to Decimal
Calculate the equivalent decimal from its associated percentage value.
Salary to Hourly
Calculate what your annual salary represents in terms of an hourly pay rate. Quickly calculate a breakdown of your hourly, daily, weekly, biweekly, monthly, quarterly, yearly, pay or salary and time worked.
Sleeping Time
Quickly determine how many hours you slept last night. Get to terms with how good or bad your sleep was last night.