Math Calculators

Core arithmetic, percentages, fractions, ratios and everyday number tools. 23 calculators in this category, all free to use.

Absolute Value Calculator

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Average Calculator

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Basic Calculator

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Cube Root Calculator

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Decimal Calculator

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Exponent Calculator

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Factorial Calculator

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Fraction Calculator

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GCD Calculator

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LCM Calculator

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Logarithm Calculator

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Modulo Calculator

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Percentage Calculator

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Percentage Decrease Calculator

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Percentage Increase Calculator

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Prime Factorization Calculator

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Prime Number Checker

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Proportion Calculator

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Ratio Calculator

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Rounding Calculator

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Scientific Notation Converter

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Square Root Calculator

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Weighted Average Calculator

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FAQ

Questions about Math calculators

What calculators are available in the Math category?

This category groups together 23 calculators related to math. Every calculator listed above is fully working.

Are these calculators free to use?

Yes. Every calculator on Calcooo is completely free and does not require an account.

How accurate are the results?

Each calculator uses a standard, documented formula shown on its own page. Accuracy depends on the values you enter.

Can I use these calculators on my phone?

Yes. Every calculator page is built mobile-first and works on phones, tablets and desktops.