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Surface Area Calculator
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Pick a shape and enter its dimensions to find the total surface area.
| Formula Used | 2(LW+LH+WH) |
| Surface Area | 94 |
Surface Area Formulas by Shape
- Cube: SA = 6 × side²
- Rectangular box: SA = 2(LW + LH + WH)
- Sphere: SA = 4πr²
- Cylinder: SA = 2πr² + 2πrh (two circular ends plus the curved side)
- Cone: SA = πr² + πr√(r² + h²) (base plus the curved side)
Surface area is the total area of every outer face of a 3D shape added together, measured in square units - it's what you'd need to know if you were wrapping, painting, or covering the shape.