Math Calculators
Percentages, fractions, geometry, statistics and algebra.
Average Calculator
Calculate the mean, median, mode and range of a list of numbers.
Fraction Calculator
Add, subtract, multiply and divide fractions with simplified results.
Percentage Calculator
Solve common percentage problems: what is X% of Y, X is what % of Y, and percent change.
Random Number Generator
Generate random whole numbers within a range, with or without duplicates.
Right Triangle Calculator
Solve a right triangle from any two sides — angles, area and perimeter.
Scientific Calculator
A free online scientific calculator with trig, logs, powers and constants.
Standard Deviation Calculator
Find the mean, variance and standard deviation of a data set.