Online Calculators > Math Calculators > Surface Area of a Sphere Calculator

Surface Area of a Sphere Calculator

Surface area of a sphere calculator is to calculate a sphere's surface area. Surface area of a sphere formula is showed below on how to find the surface area of a sphere.

Surface Area of a Sphere

Unit of Length
Radius(r)
Sphere Area Result
28.27433 feet²
48,858.04895 Inches²
800,639.97526 cm²
1.0472 Yards²
sphere

Surface area of a sphere formula

The surface area of a sphere formula is SA=4πr², where
π≈3.14159
r=radius of sphere
Sphere is a very common perfectly round three dimensional object. It has no edges and vertices. Ball is an example of sphere. To find a surface area of a sphere, we need to find out the radius of sphere first, and then calculate its surface area 4πr².

How to find the surface area of a sphere

Following is how to calculate surface area of a sphere with radius 1.5.
Surface Area = 4xπx1.5²≈28.27433.


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