Ratio Calculator

Solve and scale ratios, and reduce them to simplest form.

Enter values

Scale A to

—

B₂ = (B / A) × A₂

All calculations run locally in your browser and update instantly as you type.

How do I scale a ratio?+

Multiply both sides by the same factor. To keep 16:9 while making the first term 1920, multiply by 120.

All calculations run locally in your browser. Nothing you type is sent to a server.