Ratio Calculator

Simplify and compare ratios

Use this when you need a fast, accurate result — no sign-up, works entirely in your browser.

Ratio Calculator — Simplify and compare ratios
Simplified ratio—

How to Use

  1. Enter your details into the fields above.
  2. Click the calculate button to get your result instantly.
  3. Use the clear button to start a new calculation.

Example

  • 8 : 12 → 2 : 3
  • 15 : 25 → 3 : 5

Formula

Divide both sides by their greatest common factor. 8 and 12 share 4, so 8 : 12 simplifies to 2 : 3 — the same relationship expressed in the smallest whole numbers.

About Ratio Calculator

Simplify and compare ratios. This free online tool gives you fast, accurate results without registration or downloads.

Everything runs locally in your browser, so your data is never uploaded or stored — privacy first.

Frequently Asked Questions

Is the Ratio Calculator accurate? +
Yes, the Ratio Calculator gives precise results using standard mathematical formulas, with no rounding errors in typical use.
Is the Ratio Calculator free to use? +
Yes, it is completely free with no registration or download required.
Does the Ratio Calculator work on mobile? +
Yes, it works on any device with instant, in-browser results.