Calculate total surface area for common 3D shapes including cubes, rectangular prisms, cylinders, cones, spheres, hemispheres, square pyramids, and triangular prisms. Estimate full outside surface area, material coverage, waste, and project cost.
Shape selection:
The calculator uses the selected 3D shape and dimensions to estimate full outside surface area.
Total area:
Total surface area includes side surfaces plus top and bottom faces or bases when they apply.
Unit conversion:
The calculator converts square feet into square yards, square meters, square inches, and square centimeters.
Project estimate:
The calculator subtracts excluded area, adds waste, estimates material units, and calculates material and labor cost.
A total surface area calculator helps estimate paint, coating, wrapping, insulation, sheeting, or covering needs for boxes, tanks, cylinders, cones, spheres, pyramids, prisms, and other 3D objects.
It can help calculate total surface area, lateral surface area, base area, material quantity, waste, material cost, labor cost, and estimated total project cost.
Your result shows total surface area, total surface area with waste, lateral surface area reference, base area reference, square yards, square meters, square inches, material units, material cost, labor cost, and estimated total cost.
Total surface area is the area of every outside face or curved surface of a 3D object.
Select the shape, enter the required dimensions, and calculate the full outside area. Each 3D shape uses a different surface area formula.
Total surface area includes all outside surfaces. Lateral surface area usually includes only the side area and excludes top and bottom bases.
Many projects use 5% to 15% extra for waste, overlap, overspray, seams, texture, cuts, and ordering buffer.
It is exact for clean geometric inputs, but real project estimates can vary by rounded edges, openings, texture, overlap, waste, product coverage, and measurement method.