VolLab

Sphere Volume Calculator

The 4/3 · π · r³ formula, instantly.

Why r³ this time

Like the cube, a sphere's volume scales with the cube of its radius — a basketball with twice the radius of a tennis ball holds 8 times the volume, not twice as much.

Everyday spheres

Balls, balloons, planets, and scoops of ice cream are all approximated as spheres — this formula estimates their volume from a single radius measurement.

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VolLab

Sphere Volume Calculator

The 4/3 · π · r³ formula, instantly.

Radius

Volume

523.599

V = 4/3 · π · r³

Surface area: 314.159

What you entered

Radius: 5

1
Volume
4/3 × π × 5³= 523.5988
2
Surface area
4π × 5²= 314.1593

Result

Volume: 523.599

A sphere with radius 5 has a volume of 523.599 and a surface area of 314.159.

Why r³ this time

Like the cube, a sphere's volume scales with the cube of its radius — a basketball with twice the radius of a tennis ball holds 8 times the volume, not twice as much.

Everyday spheres

Balls, balloons, planets, and scoops of ice cream are all approximated as spheres — this formula estimates their volume from a single radius measurement.