Surface Area Calculator
Calculate the surface area of common 3D shapes quickly and accurately. Select a shape, enter its dimensions, and choose your measurement unit.
Enter any two of the three values below.
What Is Surface Area?
Surface area is the total area of all the surfaces of a three-dimensional object. It is commonly used in geometry, construction, engineering, manufacturing, and other applications.
Surface Area Formulas
Different three-dimensional shapes require different mathematical formulas to calculate their surface area. This calculator supports several common shapes.
Frequently Asked Questions
What is surface area?
Surface area is the total area covering the outside of a three-dimensional object.
What units can I use?
You can enter measurements in meters, centimeters, millimeters, feet, inches, or yards.
Which shapes can this calculator calculate?
The calculator supports spheres, cones, cubes, cylinders, rectangular tanks, capsules, spherical caps, conical frustums, ellipsoids, and square pyramids.
Are the results exact for every shape?
Most formulas provide direct mathematical results. Ellipsoid surface area uses an approximation because there is no simple exact formula for a general ellipsoid.
Disclaimer
This calculator is provided for general mathematical and educational purposes. While we aim to provide accurate results, SmartMyTools does not guarantee that the results are suitable for professional, academic, engineering, construction, or other specialized applications.