Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
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.
Mechanical
Screw Torque Calculator
Calculates the torque needed to clamp a fastener to a target axial force, accounting for thread geometry and friction. Use it when tightening critical bolted joints to avoid under- or over-torquing.
Fill in the required fields to see your result.
Key differences
| Pulley Speed Calculator | Screw Torque Calculator | |
|---|---|---|
| Category | Mechanical | Mechanical |
| Inputs required | 3 | 3 |
| Result | Output Speed (rpm) | Required Torque (N⋅mm) |
| What it does | 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. | Calculates the torque needed to clamp a fastener to a target axial force, accounting for thread geometry and friction. Use it when tightening critical bolted joints to avoid under- or over-torquing. |