⚽ Sphere Surface Area Calculator
Find the total surface area of a sphere from its radius, along with its volume and diameter.
units
The sphere surface area formula
The total surface area of a sphere is found with Surface Area = 4 × π × r², exactly four times the area of a flat circle with the same radius.
How to use this calculator
Enter the sphere’s radius. The calculator returns the total surface area, along with the sphere’s volume and diameter for reference.
This tool is for general math, design, and educational use.
Last reviewed August 2026