Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Mechanical
Belt Drive Calculator
Calculate the driven pulley speed for a belt drive system by entering pulley diameters and the drive shaft RPM. Use it when sizing pulleys for motors, conveyor systems, or power tools.
Fill in the required fields to see your result.
Mechanical
Gear Ratio Calculator
Calculate the gear ratio between two meshing gears from their tooth counts. Use it when designing drivetrains, selecting motor reduction gears, or analyzing the speed-versus-torque trade-off in any geared system.
Fill in the required fields to see your result.
Key differences
| Belt Drive Calculator | Gear Ratio Calculator | |
|---|---|---|
| Category | Mechanical | Mechanical |
| Inputs required | 3 | 2 |
| Result | Driven Speed (RPM) | Gear Ratio (:1) |
| What it does | Calculate the driven pulley speed for a belt drive system by entering pulley diameters and the drive shaft RPM. Use it when sizing pulleys for motors, conveyor systems, or power tools. | Calculate the gear ratio between two meshing gears from their tooth counts. Use it when designing drivetrains, selecting motor reduction gears, or analyzing the speed-versus-torque trade-off in any geared system. |