That depends on the size of the plate, the type of rice, and how the rice is cooked. For the calories in rice, of all types, see the page link, further down this page, listed under Related Questions.
One serving of cooked rice is a 1/2 cup. Because 1 cup of raw rice makes 3 cups cooked, then 8 teaspoons (1/6 of a cup) of raw rice equals a 1/2 cup serving of cooked rice.
225g of cooked slightly fluffed rice will be about 1 cup. This is a common amount of sushi rice for a standard size wrap.
Five pounds of brown rice can feed approximately 20-25 people, depending on serving size and accompanying dishes. A typical serving of cooked brown rice is about 1/2 cup per person.
they triple in size as they get cooked
The common serving size for cooked couscous is 1 cup.
Given the suggested portion of one cup of cooked rice, per person, 10 cups of uncooked rice (or 20 cups of cooked rice) should be used, because rice doubles in size once it's cooked.
one cup of cooked
two tablespoons is one serving size
The rice absorbs liquid as it cooks, expanding like a small sponge, until the liquid is almost gone and the rice has tripled or quadrupled in size.
Dry rice usually expands to 3 times its normal size. So, 1 pound of cooked rice divided by 3 equals 1/3 of a pound of dry rice needed.
For westerners, 1 cup of rice per person (cooked rice) is standard. 1/2 cup of uncooked rice, generally, makes 1 cup of cooked rice. So 100 cups of cooked rice, cooked from 50 cups of uncooked rice.