CBM Calculator

How to use it: enter each distinct carton size as its own cargo line - length, width, height in centimetres and quantity - then use Add cargo line for another size. The total CBM adds every line together, so a mixed shipment doesn't need a separate calculation per size.

Formula. A cubic metre is 100 × 100 × 100 = 1,000,000 cubic centimetres, so each line's volume is Each CBM = (L × W × H) / 1,000,000, Line total = Each CBM × quantity, and Total CBM = sum of every line's total.

Worked example. With the default single line (60 × 40 × 35 cm, quantity 10): volume = 60 × 40 × 35 = 84,000 cm³, so each carton = 84,000 / 1,000,000 = 0.0840 m³, and total = 0.0840 × 10 = 0.8400 m³. Adding a second line - say 30 × 30 × 30 cm, quantity 20 - contributes (30×30×30)/1,000,000 = 0.0270 m³ each, × 20 = 0.5400 m³, for a combined total of 0.8400 + 0.5400 = 1.3800 m³ across both lines.

This treats each carton as a solid rectangular box using its outer (exterior) dimensions. If your cartons are irregular or the outer packaging isn't a plain box, measure the smallest rectangular box that fully encloses it.

No rounding is applied. Freight quotes from a carrier or forwarder often round each line's CBM (or the total) up to a fixed precision, or apply a minimum billable volume - this tool gives the raw arithmetic result, so your quote may differ slightly. CBM alone doesn't determine what you'll be charged - carriers typically compare volume against actual weight using their own weight-per-CBM conversion to find the chargeable figure. The cargo list is capped at 12 lines in this interface to keep the page responsive.