Cuboid Calculator

Find a cuboid's volume, surface area and space diagonal.

Volume 60

Surface area 94

Space diagonal 7.071

Formula: V = lwh; SA = 2(lw + lh + wh); d = √(l²+w²+h²)

Step-by-step with your numbers:

1. Values used:

2. Length = 4

3. Width = 3

4. Height = 5

6. Volume = Length x Width x Height = 4 x 3 x 5 = 60

7. Surface area = 94

8. Space diagonal = 7.071

Did we solve your problem today?

A cuboid (rectangular box) is defined by its length, width and height.

The math behind it

Volume multiplies the three dimensions. Surface area sums the six faces: 2(lw + lh + wh). The space diagonal is √(l² + w² + h²).

4 × 3 × 5 → volume 60, surface 94, diagonal ≈ 7.07.

Is a cube a cuboid?

Yes — a cube is a cuboid with all edges equal.