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MATH

Ratio Calculator

Simplify a ratio, solve an equivalent ratio, or divide a total into proportional parts.

Ratio basics

A ratio compares quantities. Equivalent ratios preserve the same proportion even when both sides are scaled up or down.

GUIDE

How to use ratios

Simplify a ratio, solve an equivalent ratio, or divide a total into proportional shares.

Steps

  1. Choose Simplify, Solve, or Split.
  2. Enter both sides of the ratio.
  3. For Split, add the total amount you want divided proportionally.
Example

Example: 12:18 simplifies to 2:3.

Formula / method

Equivalent ratios preserve the same quotient: a ÷ b = c ÷ d.