Math
Ratio Calculator
Simplify a ratio to lowest terms or solve a missing value in A : B = C : D, with 1 : n, decimal, and percentage forms.
CalculateMath tools
Free math calculators that run in your browser: a ratio calculator that simplifies ratios to lowest terms, a proportion calculator that solves A / B = C / D, a GCF calculator that finds the greatest common factor with steps, and a factoring calculator for prime factorization and all factors. Nothing is uploaded.
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Math
Proportion Calculator
Solve a proportion A / B = C / D for the missing value, or check if two ratios are proportional with cross products and the scale factor.
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GCF Calculator
Find the greatest common factor (GCD/HCF) of 2 to 20 whole numbers with prime factorization, Euclidean algorithm steps, common factors, and the LCM.
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Factoring Calculator
Find the prime factorization of a whole number, list every positive factor, see the factor count, and tell whether the number is prime or composite.
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