Spring Constant Calculator
Calculate the spring constant using Hooke's law k = F/x. Enter force and displacement.
How to Use the Spring Constant Calculator
- Enter the force applied to the spring in newtons.
- Enter the displacement (stretch or compression) in meters.
- Click Calculate to find the spring constant and stored energy.
Quick Reference
| From | To |
|---|---|
| Soft spring | 1–50 N/m |
| Medium spring | 50–500 N/m |
| Stiff spring | 500–10,000 N/m |
| Car suspension | ~20,000 N/m |
| F=10 N, x=0.05 m | k=200 N/m |
Use Cases
- •Selecting springs for mechanical design.
- •Validating spring stiffness in lab experiments.
- •Calculating energy storage in spring systems.
Formula
k = F / x, where k is the spring constant (N/m), F is force (N), x is displacement (m). Energy = ½kx².
Frequently Asked Questions
What is Hooke's law?
Hooke's law states that the force needed to extend or compress a spring is proportional to the displacement: F = kx.
What are typical spring constant values?
Ranges from ~1 N/m for soft springs to >100,000 N/m for stiff industrial springs.
Is this calculator free?
Yes, all OhMyCalc calculators are completely free.