In measuring amount by volume, the common unit is gantang, which is equivalent to an Imperial gallon (4.55 L). A gantang can be divided into four chupak. Chupak can be further divided into four chentong, and two chentong makes up a leng.
Chentong is also normally used only in certain areas, and so eight leng makes up a chupak.
When used to measure unhusked rice, a gantang weights about 4 to 5 lb (1.8 to 2.3 kg).