Compare calculators
Both calculators run independently β 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
Belt Length Calculator
Calculate the required belt length for a two-pulley drive system using pulley diameters and center distance. Use it for conveyor design, HVAC drive belts, and any power transmission layout.
Fill in the required fields to see your result.
Key differences
| Spring Rate Calculator | Belt Length Calculator | |
|---|---|---|
| Category | Mechanical | Mechanical |
| Inputs required | 4 | 3 |
| Result | Spring Rate (N/mm) | Belt Length (mm) |
| 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. | Calculate the required belt length for a two-pulley drive system using pulley diameters and center distance. Use it for conveyor design, HVAC drive belts, and any power transmission layout. |