Sphere Area Calculator

Entering data into the sphere area calculator

You can input only integer numbers or fractions in this online calculator. More in-depth information read at these rules.

N.B. In online calculator you can use the value in the same units of measurement!

If you have any difficulties with units conversion, you can use the length converter and area converter.

Sphere is the set of points that are all the same distance r from a given point in space. This distance is called the radius of the sphere.

The surface area formulas of a sphere is 4 times radius squared multiplied by π.

Surface area formulas of a sphere

A = 4 π R²

where A - the surface area of a sphere,
R - radius,
π = 3.141592.