Tools · Math Calculators
Percentage Calculator
Find a percentage of a number, a percentage change, or add and subtract a percent.
Open toolScientific Calculator
A scientific calculator with trigonometry, logarithms, powers, roots and factorials.
Open toolFraction Calculator
Add, subtract, multiply and divide fractions, with the answer in simplest form.
Open toolAverage Calculator
Find the mean, median, mode, range and standard deviation of a list of numbers.
Open toolRatio Calculator
Simplify a ratio, or split a total into shares in a given ratio.
Open toolProportion Calculator
Solve A : B = C : D for the missing value using cross-multiplication.
Open toolSquare Root Calculator
Find square roots, cube roots and any nth root, with simplest radical form.
Open toolExponent Calculator
Raise any number to a power, including negative and decimal exponents.
Open toolGCD & LCM Calculator
Find the greatest common divisor and least common multiple of 2 to 20 numbers.
Open toolWhat you can do
Quick maths is easier with the right tool. Work out a percentage of a number or a percentage change, add fractions, find an average, simplify a ratio or solve a rule of three.
There are also calculators for powers, square roots, greatest common divisor and least common multiple, plus a scientific calculator for trigonometry and logarithms.
- Percentages and percentage change
- Fractions, ratios and proportions
- Averages, powers and square roots
- GCD, LCM and a scientific calculator