Spring Force Calculator

Hooke's Law describes how a spring pushes or pulls back when it's stretched or compressed — the further you deform it, the harder it resists, in direct proportion.

x (stretch)
Instant Result
Spring Force -
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What Is a Spring Force (Hooke's Law) Calculator?

Hooke's Law describes how a spring pushes or pulls back when it's stretched or compressed — the further you deform it, the harder it resists, in direct proportion. This calculator finds that restoring force from the spring constant and the displacement.

How to Use This Spring Force (Hooke's Law) Calculator

  1. Enter the spring constant (a measure of stiffness) in newtons per meter.
  2. Enter how far the spring is stretched or compressed, in meters.
  3. Click Calculate to get the restoring force in newtons.

Formula

Worked Example

A spring with k = 250 N/m is stretched 0.15 m. Force = 250 × 0.15 = 37.5 N.

Frequently Asked Questions

How is spring force calculated?

Using Hooke's Law: Force = spring constant × displacement.

What is the spring constant?

A measure of a spring's stiffness — higher means more force needed for the same stretch.

Does Hooke's Law apply to all amounts of stretch?

No — only within the spring's elastic limit.

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