Rectangular Prism Calculator
Enter length, width and height for a rectangular box or prism.
Volume120
Surface area158
Space diagonal9.8995
How this tool works
Volume V=LWH, surface area A=2(LW+LH+WH), and space diagonal d=√(L²+W²+H²).
Example
An 8×5×3 box has volume 120 cubic units and space diagonal about 9.899.
Common questions
Is a cube supported?
Yes. Enter the same value for length, width and height.
Can this estimate shipping dimensional weight?
No. Dimensional weight uses carrier-specific divisors and is a separate calculation.