Skip to content

Geometry · free · no sign-up

Sphere Volume calculator

Find the volume of a sphere from its radius, plus its cross-section area.

How it works Report a problem

Sphere Volume calculator

Enter your values below and press Calculate to see your result instantly.

V = ⁴⁄₃π× ³
Radius Vector (r)
Computed Absolute Target Volume (V)
4188.79 Units³
EQUATORIAL PLANE AREA
314.16 Units²
GEOMETRIC EFFICIENCY
Maximal Peak
Calculations complete.

About the Sphere Volume calculator

Find the volume of a sphere from its radius, plus its cross-section area.

How to use the Sphere Volume calculator

  1. Enter the Radius Vector (r).
  2. Press Calculate.

Formula and method

V = (4/3) × π × r³. The great-circle (cross-section) area is π × r².

Worked example

A sphere with radius 10 has a volume of about 4,188.79 cubic units.

Tips

  • Volume grows with the cube of the radius: doubling the radius makes the volume eight times bigger.

Frequently asked questions

How do I find the radius from the volume?
Compute r = ∛(3V ÷ 4π).