When to use this calculator
Find the volume enclosed by a sphere from its radius. A sphere has the same radius in every direction from its centre.
Explore the volume & surface area calculators for other questions in this topic. For a related calculation, use the Spherical Cap Surface Area Calculator: Find the curved surface area of a spherical cap.
PUTTING IT INTO PRACTICE
Sphere Volume: a worked example
The values below are an illustrative example, not a recommendation. Replace them with measurements or assumptions that match your question.
| Input | Example value |
|---|---|
| Radius | 3 |
| Result | 113.097336 cubic units |
- Check the input labels and enter the example values above.
- Apply the relationship: Volume = 4πr³ ÷ 3.
- The result is 113.097336 cubic units, rounded for display.
How to interpret your result
A sphere has the same radius in every direction from its centre.
Volume and surface area have different units and answer different questions. Use internal dimensions for capacity. A closed-solid surface area includes bases and lids unless the calculator explicitly describes an open shape.
Frequently asked questions
Should I use internal or outside measurements?
Use internal measurements for capacity and outside measurements for covering the exterior. Match the formula to the part being measured.
How do I use the sphere volume calculator?
Enter radius. The result updates automatically. Use the units shown beside each input; the example values illustrate the method.
Which formula does this calculator use?
Volume = 4πr³ ÷ 3.
What should I check before using the result?
A sphere has the same radius in every direction from its centre.
How are results rounded?
Scalar numbers display up to six decimal places, with scientific notation for very large or small values. Text, fraction, date and schedule outputs use the format described on the tool. Intermediate calculations use JavaScript floating-point arithmetic. Keep sensible precision for your measurements.
Calculators Map editorial process · Updated · Methods and limitations