Cuboid Calculator
Find a rectangular box’s volume, surface and space diagonal.
Your numbers
Physical volume
Use consistent units. The result follows the assumptions you enter.
Scenario comparison
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Formula
Use V = lwh and S = 2(lw+lh+wh). l, w and h are cuboid length, width and height in the same unit. V is volume and S is total surface area.
Find a rectangular box’s volume, surface and space diagonal.
Worked example
- Length (m)
- 3
- Width (m)
- 4
- Height (m)
- 5
- Physical volume
- 60 m³
- Surface area
- 94 m²
- Space diagonal
- 7.07106781187 m
Scope and limitations
Use consistent units. The result follows the assumptions you enter.
Inputs are checked for missing values and allowed ranges. A result outside the finite numeric range is not displayed. Rounding affects display, while the calculation uses the model’s numeric precision.
Check your units and assumptions before relying on a result. Changing a label does not convert a currency or physical unit.
Formula version: ad4c5ecce255 · Example checked: