Unit Converter
Sphere Volume Calculator
Calculate sphere volume and surface area from radius.
Formula and usage notes
sphere volume = 4/3 x pi x radius cubed; surface area = 4 x pi x radius squared.
Calculate sphere volume and surface area from radius.
Practical examples
Radius 4 gives volume about 268.08 and surface area about 201.06.
Use radius, not diameter.
Round only after the final volume or area is calculated.
Frequently asked questions
What inputs does this calculator need?
Radius.
How should I round the result?
Keep extra digits while comparing values, then round for the final decision or report.
Can I reuse the result in another calculation?
Yes, but preserve the original inputs and units so the next calculation stays traceable.