What you provide
What you provide
- Sphere radius: Distance from sphere center to its surface.
- Unit context: choose one consistent length unit and interpret squared or cubic results from that same unit.
SOLID GEOMETRY / SPHERE
Sphere Calculator
Calculate sphere volume, surface area, great-circle circumference, and diameter from one positive radius.
- 01 Calculated in this tab
- 02 Values stay in this browser tab
- 03 Use boundary
Use boundary
Calculation path
The standard sphere identities scale surface with radius squared and enclosed volume with radius cubed.
Calculation path
Volume = 4 pi r^3 / 3; surface area = 4 pi r^2.
What you receive
What you receive
- Sphere volume
- Surface area
- Great-circle circumference and diameter
Use boundary
Choose the maximum decimal places shown. This does not increase source accuracy.
The model assumes a perfect sphere and does not include shell thickness, fill limits, or displacement allowances.
This is an educational planning result, not a structural, electrical, thermal, solar, battery, generator, or safety design. Confirm specifications, units, codes, and professional requirements before acting.