To accurately determine the quantity of rice boiled in an electric rice cooker using an inner pot made of a non-metal material.

The electric rice cooker with the inner pot made of the non-metal material for storing water and rice comprises a first rice boiling quantity determining means for determining the quantity of rice boiled by classifying the quantities of rice stored in the inner pot to be boiled into at least two ranks, and a second rice boiling quantity determining means for determining the quantity of rice boiled by classifying the quantities of rice stored in the inner pot to be boiled into at least three ranks. The final determination of the quantity of rice boiling is executed by the second rice boiling quantity determining means, while controlling the quantity of power supply to a rice heating means, based on the result of determination by the first rice boiling quantity determining means after the rough classification by the first rice boiling quantity determining means.