» Surface Area of a Spherical Cap Calculator


Calculate curved surface area of a spherical cap from sphere radius or diameter and cap height, with reverse solving for a missing cap dimension.

This surface area of a spherical cap calculator helps you calculate the surface area of a spherical cap from the sphere radius or sphere diameter together with the cap height. It is useful for geometry, schoolwork, models, and quick checks.

The calculator is also handy when you want to switch quickly between the sphere radius and diameter and better understand how the cap height affects the result.


Surface area of a spherical cap formulas

$$A= 2\pi R h$$





Area Calculator FAQ

How do you calculate the surface area of a spherical cap?
To calculate the surface area of a spherical cap, this calculator uses the sphere radius or sphere diameter together with the cap height.

Can I calculate the surface area of a spherical cap from the sphere diameter?
Yes. If you know the sphere diameter, the calculator first finds the radius and then calculates the surface area of the spherical cap.

What is the difference between sphere radius, diameter, and cap height?
The sphere radius is the distance from the center of the sphere to its surface. The diameter is equal to two radii, while the cap height shows how high the cap rises from its base to the top point.

What is a spherical cap surface area calculator useful for?
It is useful for geometry, schoolwork, models, technical estimates, and any situation where you need the outer surface area of part of a sphere.


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