How to use the hooke's law spring calculator
Compute spring force and stored elastic energy. Enter spring constant, extension in the fields above; the spring force, elastic energy are computed instantly and plotted on the chart so you can see how the answer changes.
Formula
Variables
- k — Spring constant (N/m)
- x — Extension (m)
Worked example
With spring constant = 200 N/m, extension = 0.15 m, the calculator gives spring force ≈ 30 N; elastic energy ≈ 2.25 J.
Frequently asked questions
What is the formula for the hooke's law spring calculation?
Spring force (N) = k × x. Elastic energy (J) = 0.5 × k × x × x. Here k is spring constant (N/m), x is extension (m).
What inputs do I need for the hooke's law spring calculator?
You need spring constant in N/m, extension in m. Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use this calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.