Moment of Inertia (disk/sphere)
Calculate Moment of Inertia (disk/sphere) instantly with the exact formula and a worked example.
Moment of Inertia (disk/sphere)
Masskg
Radiusm
I (disk, ½mr²)
0.125kg·m²
More about: Moment of Inertia (disk/sphere)
What it calculates
The “Moment of Inertia (disk/sphere)” calculator computes I (disk, ½mr²) in kg·m² from 2 parameters: mass (kg), radius (m).
A standard physics formula used in educational and engineering tasks.
Example calculation
With parameters Mass = 1 kg, Radius = 0.5 m the result is 0.125 kg·m².
How to use
- Enter mass and radius — each field above is adjustable with a slider.
- I (disk, ½mr²) (kg·m²) is calculated automatically as you type.
- Check the worked example below to see the formula applied to real numbers.
- Copy the result or bookmark this calculator.
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FAQ
How is Moment of Inertia (disk/sphere) calculated?
The Moment of Inertia (disk/sphere) calculator computes I (disk, ½mr²) (in kg·m²) from mass, radius. Enter your values above and the exact formula is applied instantly; a worked example with real numbers is shown below.
Is the Moment of Inertia (disk/sphere) calculator free?
Yes. It is completely free, needs no signup, runs entirely in your browser, and sends no data to any server.
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