What is the mass of one grain of rice?

The mass of one grain of rice can vary depending on the type of rice and its size, but on average, a single grain of rice typically weighs around 20 to 30 milligrams. This weight can fluctuate due to factors such as moisture content and the specific variety of rice. To determine the precise mass of one grain of rice, a more accurate measurement using a scale sensitive to milligrams would be necessary.