Why cooked rice weighs so much more
Rice absorbs a large amount of water as it cooks — roughly its own weight again, plus more — which is why the cooked weight isn't just "the raw weight plus a little." White rice typically comes out at about 2.7 times its raw weight once cooked; brown rice absorbs even more water during its longer cook time, landing closer to 3 times its raw weight. This is also why "1 cup raw rice" reliably yields roughly 3 cups of cooked rice — useful for recipe planning when you know how many servings you need but the recipe only lists raw quantities.
Why this is an estimate, not an exact figure
The exact cooked weight depends on cook time, water ratio used, and rice age/variety — overcooked rice absorbs more water than perfectly timed rice, and different rice varieties (basmati, jasmine, short-grain) absorb water at slightly different rates. Treat this as a solid planning estimate rather than a lab-precise figure.
Quick reference chart
| Raw (cups) | Raw (g) | ≈ Cooked (g) |
|---|---|---|
| ½ cup white rice | 93g | 251g |
| 1 cup white rice | 185g | 500g |
| 1 cup brown rice | 190g | 570g |
FAQ
How many servings does 1 cup raw rice make? Roughly 3-4 standard ½-cup cooked servings, depending on how generous the serving size is.
Does rinsing rice before cooking change the weight? Only marginally — rinsing removes surface starch, not meaningful water content, so it doesn't significantly change final cooked weight.