Does this work with non-integer ratios?

This calculator simplifies using GCD, which is designed for whole numbers; for decimals, scale both values up first.

Ratio Calculator

Simplify a ratio A:B to its lowest terms, and scale it to find an equivalent ratio given a new value for one part.

Inputs

Results

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Formula

Simplified Ratio = A / GCD(A,B) : B / GCD(A,B)

GCD, LCM, Permutations, and Combinations Explained

The Euclidean algorithm behind GCD/LCM, and the factorial math behind permutations and combinations.

Percentage Calculator

Find what percentage one number is of another, or calculate percentage change.

GCD & LCM Calculator

Find the greatest common divisor and least common multiple of two numbers.

Percentage Change Calculator

Calculate the percentage increase or decrease between two values.

Quadratic Equation Solver

Solve ax² + bx + c = 0 for real roots using the quadratic formula.

Average (Mean) Calculator

Calculate the average of up to 10 numbers.

Standard Deviation Calculator

Calculate the population standard deviation of up to 5 numbers.