Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Mechanical
Spring Rate Calculator
Compute the spring rate (stiffness) of a helical compression spring from its wire and coil geometry. Use this during spring selection or custom spring design to match a required force-deflection characteristic.
Fill in the required fields to see your result.
Mechanical
Shaft Power Calculator
Calculates the mechanical power transmitted through a rotating shaft given its torque and rotational speed. Use this when sizing motors, gearboxes, or drive shafts in mechanical systems.
Fill in the required fields to see your result.
Key differences
| Spring Rate Calculator | Shaft Power Calculator | |
|---|---|---|
| Category | Mechanical | Mechanical |
| Inputs required | 4 | 2 |
| Result | Spring Rate (N/mm) | Power (W) |
| What it does | Compute the spring rate (stiffness) of a helical compression spring from its wire and coil geometry. Use this during spring selection or custom spring design to match a required force-deflection characteristic. | Calculates the mechanical power transmitted through a rotating shaft given its torque and rotational speed. Use this when sizing motors, gearboxes, or drive shafts in mechanical systems. |