Hemisphere Volume Calculator
Calculate the volume of a hemisphere from its radius.
How to Use the Hemisphere Volume Calculator
Enter the sphere radius to calculate the volume of one half of a sphere.
Practical Example
A hemisphere with radius 3 has a volume of about 56.55 cubic units.
Factors That Affect the Result
The formula assumes a perfect hemisphere. Use the radius of the full sphere and keep units consistent.
Frequently Asked Questions
Is hemisphere volume half of sphere volume?
Yes.
Can I enter diameter?
Divide diameter by two if the tool expects radius.
What units are returned?
Cubic units.
Related Tools
- Sphere Surface Area Calculator
- Ellipsoid Volume Calculator
- Spherical Cap Calculator
- Volume Calculator
- Capsule Volume Calculator
Understanding Hemisphere Volume
A hemisphere is half of a sphere, so its volume is (2/3)πr³. Radius must be measured from the center to the curved surface, not across the full diameter.
This formula applies to an ideal half-sphere. Domes, bowls and tanks may have wall thickness, flat sections or other features that reduce practical capacity. Use internal radius for usable volume and keep units consistent. If the object is not exactly hemispherical, treat the result as an approximation rather than an exact physical capacity.