Sphere Volume Calculator
Calculate the volume and surface area of a sphere from its radius.
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Volume
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Surface Area
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Diameter
Recent Calculations
What Is Sphere Volume?
A sphere is a perfectly round 3D shape where every point on the surface is equidistant from the center.
Formula
V = ⁴⁄₃πr³, Surface Area = 4πr²Example
A sphere with radius 5 has volume = ⁴⁄₃π(5³) = 523.599 cubic units.
Frequently Asked Questions
How do I find the radius from volume?
r = ∛(3V / 4π). For example, a sphere with volume 1000 has radius ≈ 6.20.
What's a hemisphere volume?
Half of a sphere: V = ²⁄₃πr³.