Gear Ratio Calculator
Compute the ratio between a driving and driven gear, and the resulting output speed.
i = Z₂ / Z₁, N₂ = N₁ / i
- i = gear ratio
- Z₁ = driver teeth
- Z₂ = driven teeth
- N₁, N₂ = input/output speed
Result
Enter values and press Calculate.
i = Z₂ / Z₁, N₂ = N₁ / i
For educational and general reference only. Results depend on the accuracy of the values entered and are rounded to the selected precision. Verify critical designs with a qualified engineer and applicable codes. Full disclaimer