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Rectangular Prism Calculator
Find volume, surface area, and diagonal of a box.
The volume of a box
A rectangular prism, or box, is the most common 3D shape in daily life, from rooms to packages. Its volume, surface area, and diagonal all come from three dimensions.
A box of 4 by 3 by 2 has a volume of 24, a surface area of 52, and a space diagonal of about 5.39. Enter your own dimensions for exact figures.
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Frequently Asked Questions
What is the formula?
Volume is length times width times height; surface area sums the six faces.
What is the diagonal?
The space diagonal, the square root of length squared plus width squared plus height squared.
What is a rectangular prism?
A box shape — any solid with six rectangular faces, like a room or a shipping carton.
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