What is the Box Volume Calculator?
Volume tells you how much a box can hold and how much space it takes on a truck or in a container. The box volume calculator multiplies length × width × height and converts the answer into every common unit: cubic centimetres, litres, cubic metres (CBM), cubic inches and cubic feet.
For many cartons at once use the Carton Volume Calculator or the CBM Calculator. All calculators accept centimetres, inches or millimetres and kilograms or pounds, so you can use the units on your supplier's spec sheet.
How to use the Box Volume Calculator
- Enter length, width and height.
- Choose the unit.
- Read the volume in all units.
Formula
Volume = length × width × height · 1 m³ = 1,000 litres = 35.315 ft³
Example
A box of 40 × 30 × 25 cm has a volume of 30,000 cm³ = 30 litres = 0.03 m³ = 1.06 ft³.
Volume unit conversions
| From | To |
|---|---|
| 1 litre | 1,000 cm³ |
| 1 m³ (CBM) | 1,000 litres |
| 1 ft³ | 28.317 litres |
| 1 m³ | 35.315 ft³ |
| 1 in³ | 16.387 cm³ |
Related packaging and shipping tools
Packaging decisions are connected: the box size sets the volumetric weight, which sets the courier bill, and the carton size decides how many fit on a pallet or in a container. These related calculators help with the next step:
- Box size calculator: inside and outside box dimensions.
- Box weight calculator: empty carton weight from GSM.
- Corrugated box calculator: GSM and BCT strength.
- Cardboard sheet calculator: RSC blank size and sheet yield.
- Box dieline generator: printable cut-and-fold template.
Frequently asked questions
How do I calculate the volume of a box?
Multiply length × width × height.
How many litres are in a box?
Volume in cm³ divided by 1,000.
What is CBM?
Cubic metre, the standard unit for freight volume.
How many cubic feet are in a cubic metre?
About 35.315.
Should I use inside or outside dimensions?
Inside for capacity; outside for shipping space.
Is the Box Volume Calculator free to use?
Yes. The Box Volume Calculator on Custom Converter is completely free, with no sign-up, no daily limit and no watermark.
Does the Box Volume Calculator work on mobile phones?
Yes. It is built mobile-first and works on Android phones, iPhones, tablets and computers in any modern browser, with no app to install.