Ratio Calculator

Simplify a ratio and solve a proportion A:B = C:x.

C (for A:B = C:x)

Simplified ratio

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Solve A:B = C:x—

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How it works

Simplify by dividing by the greatest common divisor

Frequently Asked Questions

What does the Ratio Calculator do?

Simplify a ratio and solve a proportion A:B = C:x.

Do I need to sign up?

No. It is free and runs entirely in your browser on any device.