Surface Area Calculator
Cube: SA=6s²; Sphere: SA=4πr²; Cylinder: SA=2πr(r+h); Cone: SA=πr(r+√(r²+h²))4π×5²=4π×25≈314.16
Free online tool
Surface Area Calculator
Select a shape and enter its dimensions.
Instant calculation
Surface Area Calculator
Select a shape and enter its dimensions.
Your result
Calculation
Your numbers stay in this browser. Nothing is uploaded or saved.
Three clear steps
How to use this calculator
- 01
Select shape
Choose your 3D shape type.
- 02
Enter dimensions
Type the required dimensions.
- 03
See surface area
Calculate to see the total surface area.
The formula
How this calculation works
Surface area is the total area of all faces of a 3D object.
Check the method
Worked examples
Each example follows the same formula used by the calculator.
Surface area of a sphere radius 5?
4π×5²=4π×25≈314.16≈ 314.16 square unitsCommon questions
Questions about this calculation
What is the Surface Area Calculator?
The Surface Area Calculator helps you calculate the surface area of common 3D shapes. Enter your values and select Calculate to get an instant result.
How is the result calculated?
Surface area is the total area of all faces of a 3D object.
Can you show an example?
Example: Surface area of a sphere radius 5? — ≈ 314.16 square units.
Is my data saved when I use the Surface Area Calculator?
No. All calculations run locally in your browser. Your inputs and results are never uploaded, stored or shared with anyone.
Is the Surface Area Calculator free to use?
Yes. The Surface Area Calculator is completely free. No account, sign-up or payment is required. It works on mobile, tablet and desktop.
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