Sphere Volume Calculator
Calculate the volume and surface area of a sphere from its radius.
How to use this tool
- Enter radius in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your volume and the full breakdown beneath it.
Calculate sphere volume (4/3 × π × r³) and surface area (4 × π × r²).
Frequently asked questions
- How do you calculate sphere volume?
- Volume = (4/3) × π × r³. Surface area = 4 × π × r². For r=3: V = 4π×9 = 36π ≈ 113.10.