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Cube Volume & Surface Area Calculator

Calculate volume, surface area, and diagonals of a cube.

Tool inputs stay in your browser · optional AI search sends your query

Good to know: Formulas: Volume = a³, Surface Area = 6a², Space Diagonal = a√3.

How to use it (step by step)

  1. 1Fill in the boxes: “Edge Length (a)”. Example numbers are already there so you can see how it works; replace them with yours.
  2. 2The result updates instantly as you type (on a phone it is below the boxes).
  3. 3The bold line is the main answer. Tap Copy next to any value to copy it.

Words to know

Area / volume / perimeter
Perimeter = distance around a shape. Area = the flat space inside it (m²). Volume = the space inside a 3D object (m³).

More in Math

Significant Figures CalculatorRound a number to a chosen number of significant digits.Rounding CalculatorRound, floor or ceil to a decimal place.Logarithm CalculatorFind log base b of a positive number.Nth Root CalculatorFind real integer roots, including odd roots of negatives.Modulo CalculatorFind a non-negative remainder for integer division.Triangle CalculatorArea, perimeter and angles from three sides.