Cube Surface Area Calculator – Find Area by Side Length

Calculate the surface area, volume, and diagonal of a cube using its side length.

Enter the side length, select a unit, then click Calculate.

A cube is a three-dimensional solid object bounded by six square faces, with three faces meeting at each vertex. All edges of a cube are equal in length. The surface area of a cube is the total area of all six faces, calculated as SA = 6a², where a is the length of one side. The volume is V = a³. The face diagonal (across one face) is a√2, and the space diagonal (through the interior from one vertex to the opposite) is a√3. This calculator is essential for geometry, packaging design, construction, and mathematics education. Understanding cube measurements helps in estimating material requirements, container capacities, and spatial dimensions in real-world applications.

  1. Enter the Side Length of the cube.
  2. Select the Unit (meters, centimeters, millimeters, inches, or feet).
  3. Click Calculate to compute the surface area, volume, and diagonals.
  4. The result shows all properties with the selected unit.
  5. Click Reset to restore default example values.

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