Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Engineering
Gear Ratio & Speed Calculator
Determine the gear ratio, output shaft speed, and torque multiplication of any meshing gear pair. Use it when designing drivetrains, gearboxes, or motor-to-wheel power transmissions.
Fill in the required fields to see your result.
Engineering
Power Transmission Calculator
Converts torque (N·m) and rotational speed (rpm) into mechanical power in kilowatts. Use it when sizing motors, drives, or shafts, or when checking whether a drivetrain can handle a given load without overheating.
Fill in the required fields to see your result.
Key differences
| Gear Ratio & Speed Calculator | Power Transmission Calculator | |
|---|---|---|
| Category | Engineering | Engineering |
| Inputs required | 3 | 2 |
| Result | Output Speed (rpm) | Power (kW) |
| What it does | Determine the gear ratio, output shaft speed, and torque multiplication of any meshing gear pair. Use it when designing drivetrains, gearboxes, or motor-to-wheel power transmissions. | Converts torque (N·m) and rotational speed (rpm) into mechanical power in kilowatts. Use it when sizing motors, drives, or shafts, or when checking whether a drivetrain can handle a given load without overheating. |