Parallel Axis Theorem Calculator
Apply the parallel axis theorem to find moment of inertia about any axis
Parallel Axis Theorem
Calculate the moment of inertia about any axis parallel to the centroidal axis.
Formula
How to Use This Calculator
Enter your input values
Fill in all required input fields for the Parallel Axis Theorem Calculator. Most fields include unit selectors so you can work in your preferred unit system.
Review your inputs
Double-check that all values are correct and that you have selected the right units for each field. Incorrect units are the most common source of calculation errors.
Read the results
The Parallel Axis Theorem Calculator instantly computes the output and displays results with units. All calculations happen in your browser — no loading time and no data sent to a server.
Formula Reference
Parallel Axis Theorem Calculator Formula
See calculator inputs for the governing equation
Variables: All variables and their units are labeled in the calculator interface above.
When to Use This Calculator
- •Use the Parallel Axis Theorem Calculator when solving homework or exam problems that require quick numerical verification of your hand calculations.
- •Use it during the design phase to rapidly iterate on parameters before running detailed finite element simulations.
- •Use it when reviewing a colleague's calculation or checking a vendor's data sheet for plausibility.
- •Use it to generate reference data for a technical report or presentation without manual computation.
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