How Many Grams in a Cup of Rice?

Uncooked white long-grain rice is a baseline for cup-to-gram conversions in American kitchens. One US cup of uncooked rice weighs approximately 185 grams before cooking. Cooked rice weighs roughly three times more per cup because absorbed water increases mass—never confuse uncooked and cooked conversions when meal prepping or following nutrition labels.

Measure uncooked rice in a dry measuring cup filled to level, or weigh 185 grams per cup. Scooping from a bag compacts grains slightly; fluff before measuring for consistency. Short-grain and brown rice differ: brown rice runs about 190 grams per cup uncooked; sushi rice can exceed 200 grams when packed.

Common mistakes include using the uncooked weight when a recipe means cooked rice, doubling or halving portions incorrectly. Rinsing rice before measuring removes surface starch but also a negligible amount of weight—measure before or after rinsing consistently. Converting international recipes without noting metric cup sizes causes errors outside the US.

Store uncooked rice in a sealed container in a cool pantry; white rice keeps years while brown rice lasts six months due to oil in the bran. Substitute quinoa or couscous using their own weight charts—not 185 grams per cup. For cooked rice, one cup typically weighs 150 to 200 grams depending on moisture.

Uncooked rice at 185 grams per cup is the foundation for meal-prep math where cooked yield triples volume but must not confuse starting weight. Nutrition labels sometimes list dry versus cooked servings; converting cups to grams clarifies which the label means. Pilaf recipes that toast rice before simmering still start from uncooked weight unless explicitly stated. When substituting brown rice, use about 190 grams per cup uncooked and extend cooking time. Rice flour ground from the same grain weighs differently—do not use this 185-gram conversion for rice flour in baking applications.

Meal prep containers often list cooked rice cups on nutrition trackers; converting uncooked 185 grams per cup clarifies logging when you cook large batches and portion after steaming.