Volume·surface area calculator
Enter the radius to calculate the volume and surface area of a sphere.
Input
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Result
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Fractional results are displayed up to 12 digits of precision. Please unify units in the input values.
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Calculation·conversion criteria
Calculate the volume and outer area of a sphere using radius.
Input example
Radius 1: outer area ≈ 12.5663706144
The volume of a sphere with radius 3 is 36π, and the outer area is also 36π numerically. The units of the two results are cubic units and square units, respectively.
How to use
- Use the entered example value or change the radius item.
- Click Verify result and check the following result.
- Result can be copied if needed.
Frequently Asked Questions
If only knowing the diameter of a sphere, what should I enter?
Enter the radius divided by 2. A sphere with a diameter of 10cm has a radius of 5cm. To find the volume of a hollow cavity, you need to subtract the volume of the inner sphere separately.
Calculation criteria and reference materials
The calculation formula and scope of this tool are disclosed in the above description. Examples can be checked by substituting input values into the formula or following the specified string and calendar handling rules.
Verification of calculation criteria: · Calculation·verification principles · Report errors