Box Volume Calculator
Calculate the volume of a box in cubic meters, cubic feet and litres from its length, width and height in any unit.
How the box volume calculator works
This calculator gives the plain geometric volume of a rectangular box, the space inside its three dimensions, and reports it three ways at once: cubic meters (m³), cubic feet (ft³) and litres. The formula is the standard cuboid volume:
Volume = length × width × height
Every side is converted to a common unit first. Cubic meters is the base, then the calculator applies fixed factors: 1 m³ = 35.3147 ft³ and 1 m³ = 1000 litres.
Worked example (page defaults)
The default box is 50 × 40 × 30 cm. Convert each side to meters:
- 50 cm = 0.5 m
- 40 cm = 0.4 m
- 30 cm = 0.3 m
Multiply: 0.5 × 0.4 × 0.3 = 0.06 m³. Then:
- Litres: 0.06 × 1000 = 60 litres
- Cubic feet: 0.06 × 35.3147 = 2.119 ft³
The centimeter shortcut also works: 50 × 40 × 30 = 60,000 cm³, and since 1 litre = 1000 cm³ that is 60 litres directly, or 0.06 m³.
Volume unit conversion table
| From | To | Multiply by |
|---|---|---|
| m³ | litres | 1000 |
| m³ | ft³ | 35.3147 |
| cm³ | litres | ÷ 1000 |
| ft³ | m³ | 0.0283168 |
| litres | m³ | ÷ 1000 |
Volume vs CBM, same math, different focus
Volume in cubic meters is CBM; the two terms describe the identical calculation. The difference is framing: this page leans toward general box volume, useful for storage, capacity and packing, and adds litres, which freight pages rarely show. When you are planning a shipment specifically, the CBM calculator presents the same m³ result alongside cubic feet, and the CBM calculator for multiple boxes totals a mixed load.
This is the raw internal cube of one rectangular box. It does not subtract wall thickness or account for irregular contents, and for shipping it does not include pallet bases or stacking gaps. For the background on how this volume figure is used as CBM in freight, see what is CBM.