Math Tools
Calculate percentages, absolute change, generate random numbers, and convert units with quick math tools.
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Random Number Generator
Generate random numbers in a custom range with optional unique results.
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Percentage Change Calculator
See how much a value rose or fell in percent.
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Percentage Increase Calculator
Work out raises, markups and growth in percent.
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Percentage Decrease Calculator
Work out drops, cuts and losses in percent.
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Percentage Difference Calculator
Compare two values without picking a baseline.
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Percent Error Calculator
Check how accurate your measurement is.
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Average Percentage Calculator
Average percentages with or without weights.
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Marks Percentage Calculator
Turn your marks into an overall percentage.
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Fraction to Percent Converter
Switch between fractions, decimals and percents.
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Absolute Change Calculator
Measure the exact difference between two numbers.