40' HQ container total cbm is 68
40' HQ is 68 cbm
A 40' NOR container (Not 40' NOR H.C.) has a capacity of 57.8 CBM.
33.2 CBM or 33.2 M3
54 - 56 cbm
56 CBM
To answer this, I have to assume that your container is a perfect cube. 20ft is 6.096m. this to the power of 3 is 226.535m3
According to http://adaptainer.co.uk 562 CFT are in a 10ft container.
Mathematically it is close to 77 CBM. But in international business it is generally accepted to consider 68-70 CBM for 40 ft HQ containers.
Approx 38cbm in a 20' contianer Approx 38cbm in a 20' contianer
65
28