CBM stands for cubic meters. It is a metric unit of volume that describes how much space your consignment takes. If you want to recalculate it to imperial units, use the following equation: 1 CBM = 1 m³ = 35.3147 cu ft Don't worry about recalculating the units, though. You can easily change them in the container volume calculator. Centimeters, inches, or feet? They're all there.