Box Volume
Calculator

Inputs

Volume
24

Results

Volume
24
Total surface area
52
Space diagonal
5.385164

Results

Volume24
Total surface area52
Space diagonal5.385164

formula-map diagram

Volume
24
Total surface area
52
Space diagonal
5.385164

Formula map

Formula

V = l × w × h

= 24

Note

Simplified model: these are exact results of the stated idealised formulas, assuming perfect shapes and exact inputs. Real measurements carry error, and the ellipse perimeter is a Ramanujan approximation. Verify independently before relying on these figures.

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Frequently asked questions

What three measurements do I need?+

Length, width, and height of the rectangular box (also called a rectangular prism or cuboid). All three are independent dimensions.

What is the formula?+

Volume equals length times width times height (V = l × w × h). It does not matter which dimension you call length versus width, as long as all three are multiplied together.

How do I also get the surface area?+

Surface area of a box is 2(lw + lh + wh) — it adds up the areas of all six rectangular faces (two of each pair). Check if your calculator reports this alongside volume.

What if my box has an open top, like a storage bin?+

Volume is unaffected by whether the top is open or closed — it still measures the internal capacity. Surface area would change, since you'd subtract one face, but this calculator assumes a closed box unless stated otherwise.

Why do my units come out wrong?+

Make sure all three dimensions are in the same unit before multiplying. Mixing centimeters and meters will give a volume that is off by a factor of 100 or 1,000,000 depending on which dimension was wrong.