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Math Calculators

Choose the right operation for proportions, fractions and descriptive statistics.

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Percentages

Find percentages, changes and comparisons using the right reference value.

Fractions & Decimals

Move between fractions and finite decimals, or calculate with fractions.

Descriptive Statistics

Describe the center and spread of a set of numbers.

Featured calculators

Average Calculator

Find the arithmetic mean of a list of numbers, with the sum and range shown alongside it.

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Fraction Calculator

Add, subtract, multiply or divide two fractions using integer arithmetic.

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Percentage Calculator

Find percentages, compare values, and calculate increases or decreases.

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Popular in Math

Average Calculator

Find the arithmetic mean of a list of numbers, with the sum and range shown alongside it.

Open calculator

Percentage Calculator

Find percentages, compare values, and calculate increases or decreases.

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All tools in Math

15 calculators to explore

Average Calculator

Find the arithmetic mean of a list of numbers, with the sum and range shown alongside it.

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Decimal to Fraction Calculator

0.75 = 75/100 = 3/4.

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Fraction Calculator

Add, subtract, multiply or divide two fractions using integer arithmetic.

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Fraction to Decimal Calculator

3/4 = 0.75 = 75%.

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GCD & LCM Calculator

Find the greatest common divisor and least common multiple of two to ten integers.

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Median Calculator

For 1, 3, 7, 9 the median is (3 + 7) / 2 = 5.

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Mode Calculator

For 1, 2, 2, 3, 3 the modes are 2 and 3, each with frequency 2.

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Percentage Calculator

Find percentages, compare values, and calculate increases or decreases.

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Percentage Change Calculator

Measure a directional change from a positive starting value to a new value.

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Percentage Difference Calculator

Compare two non-negative values when neither is a starting baseline.

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Percentile Calculator

Find a percentile using an explicitly defined linear interpolation method.

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Range Calculator

For −3, 2, 10 the range is 10 − (−3) = 13.

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Ratio Calculator

Simplify a two-part ratio or scale it to a new first value.

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Standard Deviation Calculator

For 2, 4, 4, 4, 5, 5, 7, 9 the mean is 5, population variance is 4 and population standard deviation is 2.

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Weighted Average Calculator

Combine values that contribute unequally to an overall average.

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A helpful Math guide

For percentages, identify the reference value. For statistics, check whether the inputs represent a population or sample. Preserve exact fractions when rounded decimals would lose useful precision.

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