Sphere Calculator
Calculate the volume and surface area of a sphere with our free online calculator.
Enter Sphere Dimensions
Results
Enter the radius or diameter to calculate results.
About Sphere Calculator
What is a Sphere?
A sphere is a perfectly round three-dimensional object where every point on the surface is equidistant from the center. It's one of the most fundamental shapes in geometry.
Key Properties
- All points on the surface are at the same distance from the center
- Has infinite rotational symmetry
- No edges or vertices
- Perfectly symmetrical in all directions
Formulas
Volume: V = (4/3)πr³
Surface Area: A = 4πr²
Diameter: d = 2r
Radius: r = d/2
Common Applications
- Planets and celestial bodies
- Sports balls (basketball, soccer, etc.)
- Bubbles and soap films
- Storage tanks and containers