Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Mechanical
Gear Ratio Calculator
Determine the output speed and mechanical advantage of a gear pair by entering tooth counts, input RPM, and system efficiency. Ideal for engineers and hobbyists designing gearboxes, drivetrains, or robotics.
Fill in the required fields to see your result.
Mechanical
Pulley Speed Calculator
Calculates the output shaft speed of a belt-and-pulley system based on pulley diameters and input speed. Use it when designing drive systems to achieve a target RPM ratio between driver and driven shafts.
Fill in the required fields to see your result.
Key differences
| Gear Ratio Calculator | Pulley Speed Calculator | |
|---|---|---|
| Category | Mechanical | Mechanical |
| Inputs required | 4 | 3 |
| Result | Output Speed (RPM) | Output Speed (rpm) |
| What it does | Determine the output speed and mechanical advantage of a gear pair by entering tooth counts, input RPM, and system efficiency. Ideal for engineers and hobbyists designing gearboxes, drivetrains, or robotics. | Calculates the output shaft speed of a belt-and-pulley system based on pulley diameters and input speed. Use it when designing drive systems to achieve a target RPM ratio between driver and driven shafts. |