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Both calculators run independently β change the inputs on either side to compare results.
Engineering
Gear Ratio & Torque Calculator
Compute the output torque, gear ratio, and mechanical advantage of a gear pair given tooth counts, input torque, and efficiency. Use this when designing gearboxes, drivetrains, or any power transmission system.
Fill in the required fields to see your result.
Engineering
Gear Ratio & Speed Calculator
Calculates the output speed of a two-gear meshing pair given the driver and driven tooth counts and the input speed. Use it when selecting gear pairs for motors, gearboxes, or power-transmission drives. (For output torque, multiply input torque by the gear ratio R = drivenTeeth / driverTeeth and by mesh efficiency β see the explanation below.)
Fill in the required fields to see your result.
Key differences
| Gear Ratio & Torque Calculator | Gear Ratio & Speed Calculator | |
|---|---|---|
| Category | Engineering | Engineering |
| Inputs required | 4 | 3 |
| Result | Output Torque (Nm) | Output Speed (RPM) |
| What it does | Compute the output torque, gear ratio, and mechanical advantage of a gear pair given tooth counts, input torque, and efficiency. Use this when designing gearboxes, drivetrains, or any power transmission system. | Calculates the output speed of a two-gear meshing pair given the driver and driven tooth counts and the input speed. Use it when selecting gear pairs for motors, gearboxes, or power-transmission drives. (For output torque, multiply input torque by the gear ratio R = drivenTeeth / driverTeeth and by mesh efficiency β see the explanation below.) |