Box Volume Calculator
Find a box’s volume, surface area and diagonal from length, width and height.
Result
How to use
- Enter your values in the fields above.
- Press Calculate to see your result instantly.
- Use the Share button to copy a link to your result.
About this calculator
This calculator takes a rectangular box's length, width and height and computes its volume (length × width × height), surface area (the sum of all six rectangular faces), and space diagonal — the longest straight line that fits inside the box, corner to corner.
It's used for real-world packing and shipping problems: checking whether an item fits inside a box by comparing its length to the box's diagonal, estimating how much a shipping container or storage bin can hold, and calculating how much cardboard, wrapping paper or material is needed to cover a box's surface. It's also a standard geometry problem for students working through volume and surface area of rectangular solids.
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