Surface area formula calculator
Published On: 25/02/2026
Surface Area Formula Calculator
Calculate the surface area of common 3D shapes. Select a shape, enter dimensions, and get the result with the matching formula.
Inputs explained:
• Shape: choose the 3D object you want (cube, rectangular prism, cylinder, sphere, cone, etc.).
• Dimensions: measurements like length, width, height, radius, and slant height.
• Units: the output is in square units (cm², m², in², etc.) matching your input units.
• Shape: choose the 3D object you want (cube, rectangular prism, cylinder, sphere, cone, etc.).
• Dimensions: measurements like length, width, height, radius, and slant height.
• Units: the output is in square units (cm², m², in², etc.) matching your input units.
Tip: If you’re painting or wrapping an object, add extra material for overlaps, waste, and edges.
Surface Area Formula Calculator — Description
The Surface Area Formula Calculator helps you find the total surface area of common 3D shapes, including cubes, rectangular prisms, cylinders, spheres, cones, and triangular prisms. Select a shape, enter the required dimensions, and the tool applies the correct surface area formula to calculate the result in square units.
This calculator is useful for math students, geometry homework, construction planning, packaging, painting estimates, and any project where you need to measure the outside area of an object.