Pulley Ratio Calculator

Calculates or estimates pulley ratio for engineering use.

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Result

Pulley ratio

2 : 1

Speed ratio

Output speed = Input × 0.5

Pulley Ratio Calculator — How It Works

Calculates or estimates pulley ratio for engineering use. Try the Pulley Ratio Calculator in your browser — instant results, no sign-up.

Enter your values in the fields shown. Results update live as you type.

Yes — runs entirely in your browser.