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Math Calculators
Rectangular Prism Calculator
Calculate a rectangular prism's volume, surface area and space diagonal from its length, width and height, with independent unit choices for each.
Volume
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Surface area
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Space diagonal
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About the Rectangular Prism Calculator
A rectangular prism (box) has three dimensions — length, width and height — which together determine its volume, surface area and internal diagonal. Length, width and height each have their own unit selector, and so does every result — the calculator converts everything automatically.
Formulas: Volume = lwh · Surface Area = 2(lw + lh + wh) · Diagonal = √(l² + w² + h²)
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