8 Cups of Rice in Grams

Eight cups of raw rice is 1,480 grams

Multiply the cup count by the weight of one cup and the answer falls out: 8 x 185 = 1,480 g. USDA FoodData Central record 168877, an SR Legacy entry revised in April 2019, puts one cup of raw long-grain white rice at 185 g, and every raw weight here is built on that figure.

In US units, 1,480 g is 1,480 / 28.3495 = 52.21 oz, or 1,480 / 453.592 = 3.26 lb. The volume is 8 x 236.588 = 1,892.7 mL, so dry rice sits at 1,480 / 1,892.7 = 0.78 g per mL.

Bag math follows. A 5 lb bag holds 2,268 g, which is 2,268 / 1,480 = 1.53 batches of eight cups. A 10 lb bag covers 3.06 batches, and a 25 lb sack covers 7.66. Cook eight cups every Sunday and one 25 lb sack lasts about two months.

The same eight cups weigh 1,264 g after cooking

Cooked long-grain white rice weighs 158 g a cup in USDA FoodData Central record 168878, so eight cups of the finished grain is 8 x 158 = 1,264 g. That is 216 g less than the dry measure and the same amount of food, because the gap is water that left the pot as steam. Cooked brown rice is heavier at 202 g a cup, which makes eight cups 1,616 g.

Recipes are not always clear about which measure they mean. Eight cups of rice for a pilaf or a rice cooker means dry grain, 1,480 g. Eight cups of cooked rice for a salad or a casserole means 1,264 g of cold grain, which comes from about 2.7 cups of dry rice. Reading one as the other throws the water ratio off by a factor of three.

Short-grain rice has the heaviest dry cup at 200 g, so eight cups of sushi rice is a round 1,600 g. Medium grain sits at 1,560 g. The 120 g spread between long and short grain is small in a big pot, but it is the reason a sushi recipe measured by volume comes out firmer when you swap in long-grain without adjusting the water.

Eight dry cups cook into about 24 cooked cups

White rice triples in volume, per the USA Rice Federation cooking guide, so 8 dry cups become about 24 cooked cups. At 158 g a cup that is 24 x 158 = 3,792 g of cooked rice. Portion it at 150 g and you get 3,792 / 150 = 25.3 containers, each about 195 kcal. Portion it at a half cup, roughly 79 g, and the batch covers 48 servings.

For a family of four eating a cup each, that is six meals. For meal prep it is a week of lunches for five people with a little over. Cool the rice within two hours of cooking, per USDA FSIS food safety guidance, spread it in shallow trays instead of one deep pot, and eat refrigerated rice within 3 to 4 days. The rest goes into the freezer flat and labelled on the day it is cooked, and reheats to 165 F.

The batch also sets the pot size. Eight cups of dry rice plus 16 cups of water is 24 cups of volume, about 5.7 L before the grains swell, so reach for an 8 quart stockpot, not a 4 quart saucepan. A 4 quart pot will boil over even though the dry rice looks small going in.

Water for eight cups: 16 cups white, 18 brown

Long-grain white rice takes two parts water to one part rice by volume, the rule of thumb in the USA Rice cooking chart, so eight cups of rice need 16 cups of water. That is 16 x 236.588 = 3,785.4 g, which is one US gallon. Medium grain takes 1.5 parts, or 12 cups. Short-grain sushi rice takes 1.25 parts, or 10 cups. Long-grain brown takes 2.25 parts, or 18 cups, and a 40 to 45 minute cook.

The finished pot tells you whether the ratio worked. The dry rice and the water together weigh 1,480 + 3,785 = 5,265 g, and the cooked batch weighs 3,792 g, so about 2,310 g of water ends up inside the grains and roughly 1,470 g leaves as steam. If the lid is still beaded and the bottom is wet, the heat was too low. If the bottom scorched, the water left too fast.

Rice cooker owners should mind the cooker cup. The plastic cup that ships with most cookers holds 180 mL, which at 0.78 g per mL is about 140.8 g of dry rice, so 1,480 g is 1,480 / 140.8 = 10.5 cooker cups. Most home cookers top out at 10 cups, so either cook this batch in two rounds or use a stockpot.

5,402 calories dry, 4,930 in the pot

At 365 kcal per 100 g, 1,480 g of raw white rice is 1,480 x 3.65 = 5,402 kcal, with 1,480 x 0.7995 = 1,183 g of carbohydrate. Brown rice at 367 kcal per 100 g gives 1,480 x 3.67 = 5,432 kcal for the same weight, since the bran carries a little fat and fibre in place of some starch.

The cooked batch holds 3,792 g at 130 kcal per 100 g, which is 3,792 x 1.3 = 4,930 kcal. No calories disappeared in cooking; the batch weighs more because it holds water, so the same energy is spread across more grams. That is why one cooked cup reads 205 kcal while the dry cup that made it read 675.

Serving size decides what lands on the plate. A 150 g scoop at 195 kcal leaves room for protein and vegetables inside a 600 kcal dinner, and two cups at 410 kcal is a heavy plate by most guidelines. It is easy to over-serve when the pot is full and the scoop is deep.

An eight cup batch costs about $3.26

At $1.00 a pound this batch is 1,480 / 453.592 = 3.26 lb, so $3.26. Across 24 cooked cups that is 3.26 / 24 = $0.14 a cup, and across 25 containers of 150 g it is about $0.13 each.

Bulk buying moves the price only as far as the per pound price moves. A 25 lb sack is 11,340 g, which is 11,340 / 1,480 = 7.66 eight cup batches, or about 184 cooked cups. Pay $22.00 for the sack and a cooked cup costs $0.12. Pay $30.00 and it costs $0.16, at which point the smaller bag wins on price, freshness and shelf space.

A $3.00 takeout side of rice would cost about $72 for the same 24 cups. That gap is the reason a Sunday batch is worth the pot washing.

Converting grams back to cups at this size

Going the other way means dividing grams by the cup weight you are using. Raw long-grain rice takes 185, so 1,480 / 185 = 8 cups. Cooked white takes 158, so 1,480 g of cooked rice is 1,480 / 158 = 9.37 cups. Those two divisors differ by 17 percent, and a converter without a raw and cooked switch will look wrong in the kitchen because of it.

The calculator above opens at eight cups. Switch the menu from raw to cooked and those eight cups read 1,264 g, since the cup weight drops to 158 g. Enter 1,000 g and it answers 5.41 cups raw or 6.33 cups cooked, with ounces, cooked yield, water and cost along for the ride.

Why your cup may not weigh 185 g

USDA's 185 g is a level cup: filled and swept flat with a straight edge. Scooping straight out of the bag packs the grains and can add 10 percent or more, so a scooped cup of long-grain rice can weigh 200 g. Eight scooped cups then read 1,600 g, and a batch cooked with the standard water runs dry and firm at the bottom.

Measuring cups differ too. The US customary cup is 236.588 mL and the US legal cup on nutrition labels is 240 mL, a 1.4 percent gap that rarely matters. A 250 mL metric cup is 5.7 percent larger, enough to leave the pot slightly wet.

A kitchen scale settles all of it. Weigh 1,480 g of rice, add water by weight at 2.56 times the rice, which is 3,785 g, and the batch comes out the same every week no matter how the cup was filled. Weighing also makes the calorie and cost numbers on this page match what is in the pot, because every figure here starts from that 1,480 g.