Ratio Calculator

Simplify ratios and solve for a missing term.

Quick answer: Free online ratio calculator. Simplify mathematical ratios to lowest terms or cross-multiply to solve proportion equations instantly.

Simplified ratio2 : 3
As decimal0.6667

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Reduce a ratio to its simplest form and, optionally, solve a proportion to find a missing term.

How it works

  1. Enter your A and B terms to simplify a ratio.
  2. Optionally, enter a C term to solve a proportional equivalence.
  3. View the simplified ratio or the solved proportion.

Frequently asked questions

How do I simplify a ratio?

Divide both numbers by their greatest common divisor: 16:24 both divide by 8, giving 2:3.

What is a proportion?

Two equal ratios. If A:B = C:D, then A x D = B x C, which lets you solve for any missing value.

Where are ratios used?

Recipes, scale models, aspect ratios, mixing solutions, and financial analysis all rely on ratios.

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