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Maths Calculators

Maths Calculators

Everyday maths — percentages, fractions, ratios, averages, standard deviation and more. All update live as you type.

Tools & checkers

Maths Live

Percentage Calculator

% of a number, % change, X is what % of Y.

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Maths Live

Fraction Calculator

Add, subtract, multiply, divide and simplify fractions.

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Maths Live

Ratio Calculator

Simplify ratios and solve A:B = C:?.

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Maths Live

Average / Mean / Median / Mode

Mean, median, mode and range from a list of numbers.

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Maths Live

Standard Deviation Calculator

Sample and population SD, variance, mean.

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Maths Live

Quadratic Equation Solver

Roots of ax²+bx+c=0 with discriminant.

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Maths Live

Random Number Generator

Generate random integers in a chosen range.

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Maths Live

Unit Converter

Length, weight and temperature unit conversions.

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Popular questions

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