The is a
Japanese unit of volume, equal to ten cubic
shaku. In this definition, 3.5937
koku equal one cubic
metre, i.e. 1
koku is approximately 278.3
litres. The
koku was originally defined as a quantity of
rice, historically defined as enough rice to feed one person for one year (one
masu is enough rice to feed a person for one day). A
koku of rice weighs about 150 kilograms (23.6 stone or 330 pounds).