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Sphere Volume Calculator
Find the volume and surface area of a sphere from its radius.
Everything from the radius
A sphere is defined entirely by its radius, and from it you can find both the volume it encloses and the surface that wraps it. This calculator computes both at once.
A sphere of radius 5 has a volume of about 523.6 and a surface area near 314.2. The calculations use full-precision pi for accurate results.
Precise and private
The calculation runs in your browser, so nothing you enter is uploaded.
Frequently Asked Questions
What is the formula?
Volume is four-thirds pi times the radius cubed; surface area is four pi times the radius squared.
What does it return?
The volume, surface area, and diameter, all from the radius.
Is pi exact?
It uses full floating-point pi, so the results are precise.
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