Science
Hooke's Law Calculator
Use Hooke's law for ideal spring problems where force is proportional to stretch or compression.
Choose the missing quantity; the calculator hides that field and solves it from the others.
Solved value
—
- Spring force
- —
- Spring constant
- —
- Displacement
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Student quick launch
Grade planning, algebra checks, and formulas students reach for most.
Study path
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What the hooke's law calculator solves
Use Hooke's law for ideal spring problems where force is proportional to stretch or compression.
Formula
How to use it
- Choose the quantity you want to solve for.
- Enter the known values with consistent units.
- Check the rearranged formula, substitution, and warnings before using the result.
How to read the answer
A stiffer spring needs more force for the same displacement.
Common mistakes and edge cases
- Use meters for displacement.
- The law applies only in the elastic range.
- The force direction opposes displacement in vector form.
Worked examples
Solve the main formula
Solved value
Spring force = 20 N
Reverse-solve a missing input
Solved value
Spring constant = 150 N/m
Frequently asked questions
Can the hooke's law calculator solve for a missing variable?+
Yes. Use the solve-for control to hide the missing value, then enter the other known values with compatible units.
Why do the units matter?+
Formula calculators assume the entered values are already in matching units. Convert first when your measurements use mixed systems.
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Last updated: May 15, 2026