Rectangular Prism Calculator

Enter the length, width and height of the box in the same unit.

Rectangular prism

Volume72,000 cm³
Surface area
10,800 cm²
Space diagonal
78.1024967591 cm

Working

  1. V = 60 × 30 × 40 = 72,000
  2. SA = 2 × (1,800 + 2,400 + 1,200) = 10,800

Formulas

V = l × w × h

A = 2(lw + lh + wh)

space diagonal = √(l² + w² + h²)

Worked example

An aquarium 60 × 30 × 40 cm

  1. V = 60 × 30 × 40 = 72,000 cm³
  2. 1,000 cm³ = 1 L

It holds 72 liters when full to the brim.

Room volume

Room volume is used to size heaters, dehumidifiers and ventilation. A room 4 m × 3.5 m with a 2.5 m ceiling has 35 m³ of air. Use the volume converter to switch to cubic feet.