CBM Calculator – Cubic Meter Volume for Boxes, Pallets & Containers

How to use this calculator

Provide the external length, width and height using the unit of your choice, then enter the quantity of identical items. Click "Calculate" or wait for the input debounce to refresh the totals. Use the volume converter for situations where the volume is already known.

Methodology

Dimensions are converted to meters and multiplied to obtain the cubic meter for one item. Total CBM multiplies that figure by the quantity. The converter uses fixed factors for each supported unit.

All inputs must be positive numbers; quantity defaults to 10 by default for quick benchmarking.

Extra precision is preserved and formatted consistently using a six-decimal strategy unless the number is extremely small or large.

Results include both per-item volume and cumulative CBM that you can use for freight quoting.

Full original guide (expanded)

What is CBM and why is it important?

CBM stands for cubic meter (m³). In freight and logistics it is the standard unit used to describe the volume occupied by cargo in containers, trucks, air pallets and warehouses.

For a rectangular box or package, the CBM is simply the product of its three dimensions expressed in meters.

Basic CBM formula

CBM = L × W × H, where L, W, H are in meters.

For multiple identical pieces

Total CBM = CBM per piece × Quantity

Unit conversions used in this calculator

1 meter = 100 centimeters.
1 inch = 0.0254 meters (exact).
1 cubic meter (m³) = 1,000 liters (L).
1 m³ = 1,000,000 cubic centimeters (cm³).
1 cubic foot (ft³) ≈ 0.0283168466 m³.
1 cubic inch (in³) ≈ 0.000016387064 m³.

Worked example: CBM for cartons on a pallet

Convert each dimension to meters: 0.60 m, 0.40 m, 0.50 m.
Compute CBM per carton: 0.60 × 0.40 × 0.50 = 0.12 m³.
Multiply by quantity: 0.12 × 10 = 1.2 m³.
Entering 60, 40, 50 and quantity 10 returns per-piece CBM 0.12 m³ and total CBM 1.2 m³.

FAQ: CBM in logistics and freight

Is CBM based on external or internal dimensions?

Freight typically uses external dimensions because that is the space occupied in a container or truck. Internal volume is more relevant for tank capacities or equipment.

How does CBM relate to container capacity?

Container capacities are often provided as internal cubic meters (for example, a 20′ container holds ~33 m³). Comparing your total CBM with those numbers helps plan container counts while remembering weight limits.

What about chargeable weight vs. CBM?

Many carriers bill the larger of actual weight or dimensional weight derived from CBM (e.g., 1 m³ = 167 kg). This tool covers the volume side of that comparison.