Moment of Inertia (disk/sphere)
Calculate Moment of Inertia (disk/sphere) instantly with the exact formula and a worked example. Free online calculator — no signup, works on mobile.
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 the parameter values — every field above is adjustable with a slider.
- The result and related metrics are calculated automatically as you type.
- Use the additional metrics shown (if any) where needed.
- Copy the result or bookmark the page.