Mechanical
Gear Ratio Calculator
Calculate the gear ratio between two gears and find the output speed and torque multiplication.
These calculators provide estimates and educational results. Always verify critical engineering calculations against applicable standards and qualified professional review.
Formula
GR = N₁ / N₂ = ω₂ / ω₁
Gear ratio is the ratio of the number of teeth of the input gear to the output gear.
Variables
| Symbol | Variable | Unit | Description |
|---|---|---|---|
| GR | Gear Ratio | - | Ratio of input to output speed |
| N₁ | Driver Teeth | - | Number of teeth on driving gear |
| N₂ | Driven Teeth | - | Number of teeth on driven gear |
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