Ratio Calculator

Summary

Simplify ratios to lowest terms, find equivalent ratios, or solve for a missing value in a proportion.

How it works

1. Choose a mode: Simplify Ratio, Equivalent Ratios, or Solve Proportion.
2. For Simplify: enter two numbers A and B to reduce A:B to its lowest terms.
3. For Equivalent Ratios: enter A and B plus a multiplier or a target term to generate equivalent ratios.
4. For Solve Proportion: enter three known values in A:B = C:? (or A:B = ?:D) to find the missing fourth value.
5. Click Calculate to see the result and step-by-step working.
6. Click Clear to reset all fields.

Use cases

• Simplify a recipe ratio like 6:9 cups to its simplest form 2:3.
• Scale a map distance using equivalent ratios.
• Solve proportion word problems in math homework.
• Find a missing ingredient amount when scaling a formula up or down.
• Verify aspect ratios for images or screen resolutions.
• Split a total into parts according to a given ratio.

Frequently Asked Questions