Spring Energy Calculator
Calculate ideal linear spring force and stored energy.
Your inputs
Calculation results
Formula & assumptions
Force = kx; energy = kx²/2; valid only within the spring’s linear range.
Values use the specified units. Calculations use floating-point arithmetic. Check input measurements and formula assumptions before applying the result.
Compare your scenarios
Save up to five results to compare changes side by side. Scenarios stay in this tab until you clear or reload it.
Using Spring Energy Calculator
Calculate ideal linear spring force and stored energy.
- Enter spring constant, extension using the units printed under each field.
- Choose Calculate, or enable live updates. Review the result labels and formula assumptions.
- Save scenarios to compare up to five variations, then copy the report or download JSON or CSV.
Example
Spring constant: 200 newtons per meter Extension: 0.1 meters Spring force · newtons: 20 Stored energy · joules: 1
Questions & answers
What does Spring Energy Calculator calculate?
Calculate ideal linear spring force and stored energy.
Which units should I enter?
Spring constant uses newtons per meter. Extension uses meters. Convert values to these units before calculating.
Which formula does it use?
Force = kx; energy = kx²/2; valid only within the spring’s linear range.
What does the included example show?
Spring constant: 200 newtons per meter; Extension: 0.1 meters. Result: Spring force · newtons = 20; Stored energy · joules = 1.
Can I compare different settings?
Yes. Save a scenario, change the inputs and save another result. Up to five scenarios are compared in this tab; they disappear when you reload or leave.
Can I export the calculation?
Copy the JSON report or download JSON and CSV with inputs, result labels and numeric values. Processing uses local JavaScript; no calculation request is sent to our server. Displayed values use up to 10 significant digits; exports retain JavaScript numeric precision.
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