math
Rectangular Prism Calculator
Calculate the volume and surface area of a rectangular prism (box) from its length, width, and height.
Volume (cubic units)
24
Surface area (square units)
52
Diagram
How it works
- 1Enter the box’s length, width, and height.
- 2Read the volume (length × width × height).
- 3Surface area is 2 × (lw + lh + wh).
Use cases
- Find the capacity of a box, room, or tank.
- Estimate material to wrap or line a box.
- Check geometry homework on rectangular prisms.
Frequently asked questions
What is a rectangular prism?
A box-shaped solid (cuboid) with six rectangular faces. Length, width, and height can all differ.
What is its volume?
Volume = length × width × height. A 2 × 3 × 4 box holds 24 cubic units.
What is its surface area?
Add the areas of all six faces: 2 × (lw + lh + wh). A 2 × 3 × 4 box has 52 square units.
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