Rectangular Prism Calculator
Find box volume, closed surface area, and space diagonal from three positive lengths.
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How to use Rectangular Prism Calculator
A rectangular prism has volume lwh, surface area 2(lw+lh+wh), and diagonal hypot(l,w,h).
- Enter length, width, height.
- Check the model, units, and supported limits before calculating.
- Run the tool, inspect the result, then copy or download it.
Good to know
- Positive finite dimensions in matching length units. Ideal closed solid only; no carrier dimensional-weight or material rules.
- Runs locally. Numeric inputs are bounded; floating-point output is approximate and rounded to 12 significant digits. Unsupported or non-finite calculations produce an error.
Common questions
How does Rectangular Prism Calculator calculate its result?
A rectangular prism has volume lwh, surface area 2(lw+lh+wh), and diagonal hypot(l,w,h).
What assumptions and boundaries apply?
Positive finite dimensions in matching length units. Ideal closed solid only; no carrier dimensional-weight or material rules.
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