Calculators

Ratio Calculator

Simplify ratios & solve for X.

Simplify a ratio (leave the third box blank for a 2-part ratio)

: : =—

1:n form —n:1 form —As fraction —As percent —

Scale a ratio

: =—

Solve equivalent ratios (A : B = C : D — leave one box blank)

: = :

This free ratio calculator simplifies 2-part and 3-part ratios to their lowest whole-number terms, shows the 1:n and n:1 forms plus the fraction and percent equivalents, scales a ratio up or down by any factor, and solves equivalent ratios for whichever value you leave blank (A : B = C : D). It's handy for recipes, mixes, gearing and aspect ratios. All calculations run in your browser.