Spherical Cap Surface Area Calculator
Find curved spherical cap area 2πRh.
Open toolSpherical Cap Base Radius Calculator
Find spherical cap base radius as √(h(2R − h)). Use the same length unit throughout.
Free to useNo sign-upRuns in your browser
Enter your details
Enter the inputs, then select Calculate.
Your result
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Result will appear here
How Spherical Cap Base Radius Calculator works
Find spherical cap base radius as √(h(2R − h)).
Use the same length unit throughout. Areas use squared units and volumes use cubed units. Cap height cannot exceed sphere diameter. Inputs and results use floating-point numbers and may be rounded. Results show up to 12 significant digits.
How to use Spherical Cap Base Radius Calculator
Follow the labelled inputs.
Enter sphere radius
Replace the example with sphere radius. The field labels specify the expected format and units.
Input and settings
Tool result
Run, review and save
Select Calculate. Review the calculated result, then copy it or download the result text.
Review the details
Examples and uses for Spherical Cap Base Radius Calculator
Check the supplied example
The starting example produces 2.2360679775. Find spherical cap base radius as √(h(2R − h)).
Use your own inputs
Read the labels for sphere radius and cap height. Use the same length unit throughout.
Record a reviewed result
Copy the calculated result into your notes. Keep the formula and assumptions with it if someone else needs to reproduce the calculation.
How to read the result
Read the units and assumptions with the output.
Find spherical cap base radius as √(h(2R − h)).
Use the same length unit throughout. Areas use squared units and volumes use cubed units. Cap height cannot exceed sphere diameter. Inputs and results use floating-point numbers and may be rounded. Results show up to 12 significant digits.
Supported input and limits
Check the stated scope before you run it.
Use the same length unit throughout. Areas use squared units and volumes use cubed units. Cap height cannot exceed sphere diameter. Inputs and results use floating-point numbers and may be rounded. Results show up to 12 significant digits.
The input stays in this browser. Copy result and Download save the same displayed text.
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Open toolSpherical Cap Base Radius Calculator: common questions
Answers about using Spherical Cap Base Radius Calculator and understanding its results.
What inputs and assumptions apply?
Use the same length unit throughout. Areas use squared units and volumes use cubed units. Cap height cannot exceed sphere diameter. Inputs and results use floating-point numbers and may be rounded. Results show up to 12 significant digits.
How can I save the result?
Copy result copies the displayed text. Download saves the same text as a TXT file. Processing runs in this browser without an account.
Calculate with your input
Check the calculated result, then copy or download it.