United States • dedicated calculator
Sprocket Speed and Ratio Calculator
Calculate chain-drive ratio, driven RPM, chain speed, center-distance chain length and torque multiplication.
Specific inputs
live visual
transparent result
live visual
transparent result
1. EnterCalculator-specific values
2. ReviewUnits and assumptions
3. CalculateDedicated formula engine
4. VerifyResult, visual and guidance
Calculator inputs
Sprocket Speed and Ratio Calculator results
How the calculation works
Driven RPM = driver RPM × driver teeth ÷ driven teeth; chain length uses the standard two-sprocket center-distance approximation.
What to verify
Check sprocket manufacturer ratings, wrap angle, lubrication and dynamic loads.
How accurate is this calculator?
It is a transparent planning calculation based on the entered values and stated assumptions. Verify inputs and obtain professional or supplier confirmation where the decision is consequential.
Does it use U.S. defaults?
Yes. U.S. units, terminology, pricing conventions and rules are the primary defaults where location matters.
Is data sent to a server?
No. The calculation runs locally in the browser and does not send entered values to a remote calculation service.