Work out cuboid volume and surface area instantly with clear inputs, formula shown and shareable results.
A cuboid has three pairs of rectangular faces, so its surface area is 2(lw + lh + wh) while the volume is the straightforward product l × w × h.
Volume
V = l × w × h
Surface area
S = 2(lw + lh + wh)
Space diagonal
d = √(l² + w² + h²)
Volume 72, surface area 2(24 + 18 + 12) = 108, space diagonal √61 ≈ 7.8102.
Twelve — four of each dimension, hence the 4(l + w + h) total.