General Calculators

Calculate percentage of a number, or find what percent one number is of another.

Calculate the new value after a percentage increase.

Calculate the new value after a percentage decrease.

Add, subtract, multiply, or divide two fractions.

Simplify and scale ratios between two numbers.

Advanced scientific calculator with trigonometry and logarithms.

Simple calculator for everyday arithmetic operations.

Calculate the arithmetic mean of a set of numbers.

Calculate the arithmetic mean of a dataset.

Find the median value in a dataset.

Find the most frequently occurring value(s) in a dataset.

Calculate the standard deviation of a dataset.

Calculate probability of independent events.

Generate a random number within a specified range.

Calculate exact age from date of birth.

Calculate the difference between two dates.

Add or subtract hours and minutes.

Calculate time remaining until a target date.