Sphere Calculator

Calculate the volume and surface area of a sphere from its radius

Frequently Asked Questions

How does doubling the radius change a sphere?

Doubling the radius multiplies the surface area by four and the volume by eight, because area scales with the square and volume with the cube of the radius.

What if I only have the diameter?

Halve the diameter to get the radius first, then enter that value, since both formulas are based on the radius.

Important Disclaimer: Estimates for informational purposes only.

This calculator provides estimates for informational purposes only. Results are based on assumptions and may not reflect actual outcomes. Consult qualified professionals in relevant fields before making important decisions based on these results.