Gear Ratio Calculator
Enter driver and driven tooth counts to calculate the gear ratio, output speed, and output torque. Supports 1 to 3 stage configurations.
Stage 1
teeth
6–500 teeth
teeth
6–500 teeth
Optional inputs (speed & torque)
RPM
Leave blank to hide output speed
N·m
Leave blank to hide output torque
Result
Total ratio
—
- Stage 1 ratio
- —
