To convert millilitres of uncooked white rice into grams, multiply by 0.78194927: one millilitre comes to 0.78194927 grams. Every ingredient has its own figure here, because the units are measuring different things and only the density links them.
The density behind that figure is 0.78195 g per mL, against 1.00 for water. A cup of water weighs 236.6 g and a cup of uncooked white rice weighs 185 g, so this ingredient is 78.19% as heavy as the same volume of water — the single fact the whole page rests on.
Uncooked white rice has a density of 0.78195 g per mL, so 100 mL of it weighs 78.19 g and 250 mL weighs 195.5 g. That single figure is what every other number on this page is built from — water is 1.00 g per mL, so this ingredient is 78.19% as heavy as the same volume of water.
Grams are the unit this conversion is really for. A domestic scale resolves to a gram, which is 0.541% of a cup of uncooked white rice, so weighing gets an accuracy no measuring cup can reach. A 500 g pack of it is 2.703 cups, and a 1 kg pack 5.405.
How the figure is arrived at: Long grain, unrinsed and dry. It roughly triples in volume once cooked, so the dry cup is the measurement worth converting — a cup of cooked rice is a different quantity entirely.
The formula
millilitres- The amount of uncooked white rice you are converting, in millilitres
0.78194927498- Grams per millilitre for uncooked white rice, from its density of 0.78195 g/mL
grams- The equivalent quantity in grams
How it works, step by step
- Enter the quantity in millilitres.
- It is multiplied by 0.78194927498, the grams-per-millilitre figure for uncooked white rice.
- The result appears in grams, with a second reading in oz beneath it.
- Use the measure table if you want a standard recipe quantity rather than a number you type in.
Worked examples
15 mL of uncooked white rice in grams
A recipe calling for 15 mL of uncooked white rice needs 11.7292 grams on the scale. The arithmetic is 15 × 0.78194927 = 11.729239, and halving the recipe halves the weight to 5.86462 grams.
100 mL of uncooked white rice in grams
100 mL of uncooked white rice weighs out at 78.1949 grams. Divide 78.1949 by 0.78194927 and you get back to 100 mL, which is the quickest check that the factor is the right way up.
250 mL of uncooked white rice in grams
Take 250 mL of uncooked white rice: 250 × 0.78194927 gives 195.487 grams. Doubling the batch takes it to 390.975 grams, because the relationship is a straight proportion once the density is known.
How to read your score
Frequently asked questions
How many grams are in 1 mL of uncooked white rice?
One millilitre of uncooked white rice is 0.78194927 grams. Half that quantity is 0.390975 grams and double it is 1.5639 grams, so the figure scales straight up and down — there is no offset in this conversion, only the factor.
Why is a cup of uncooked white rice not 236 g like water?
Because weight per cup depends on what is in the cup. Uncooked white rice has a density of 0.78195 g per mL where water has 1.00, so a cup of it weighs 185 g rather than 236.6 g. That is a difference of 51.6 g per cup, and it is the reason a single volume-to-weight factor cannot be applied to every ingredient.
Does how I measure it change the weight?
Yes, and by more than most people expect. Handling changes the weight of a cup of uncooked white rice by roughly 20% — about 18.5 g either side of 185 g — because long grain, unrinsed and dry. Weighing removes the question entirely.
Is a fluid ounce of uncooked white rice the same as an ounce?
No. A fluid ounce is a volume — one eighth of a US cup, 29.57 mL — and an ounce is a weight. One fluid ounce of uncooked white rice weighs 0.8157 oz, so the two readings differ by 18.4%. They coincide only for something with the density of water, and then only roughly.
Is this a US cup or a metric cup?
US customary: 236.59 mL, which is the cup every US recipe means. A metric cup is 250 mL, so the same cup of uncooked white rice would weigh 195.49 g instead of 185 g — 10.5 g more, or 5.67%. Australian and some European recipes use the metric cup, and the difference is large enough to matter in baking.
Do I need a scale for this, or will measuring cups do?
At this size the spoon wins. One millilitre of uncooked white rice is 0.7819 g, and a scale reading to the nearest gram is working at 128% resolution on that — a measuring spoon is the more accurate instrument below about 5 g, which is why spice quantities are still written in spoons.
How many millilitres of uncooked white rice is 500 g?
500 g of uncooked white rice is 639.43 millilitres — 1.27886 millilitres to one gram, so 500 × 1.27886 = 639.43. Going that way is a division by 0.781949, or a multiplication by 1.27886 if you prefer.
Uncooked white rice in millilitres and grams
| Millilitres | Grams | Unrounded |
|---|---|---|
| 5 mL | 3.90975 g | 3.909746375 |
| 10 mL | 7.81949 g | 7.81949275 |
| 15 mL | 11.7292 g | 11.72923912 |
| 30 mL | 23.4585 g | 23.45847825 |
| 50 mL | 39.0975 g | 39.09746375 |
| 100 mL | 78.1949 g | 78.1949275 |
| 125 mL | 97.7437 g | 97.74365937 |
| 150 mL | 117.292 g | 117.2923912 |
| 200 mL | 156.39 g | 156.389855 |
| 250 mL | 195.487 g | 195.4873187 |
| 500 mL | 390.975 g | 390.9746375 |
Based on 185 g per cup of uncooked white rice. One millilitre of uncooked white rice is 0.78194927 grams.
| Measure | Grams | Ounces | Millilitres |
|---|---|---|---|
| 1 cup | 185 g | 6.53 oz | 236.6 mL |
| 3/4 cup | 138.8 g | 4.89 oz | 177.4 mL |
| 2/3 cup | 123.3 g | 4.35 oz | 157.7 mL |
| 1/2 cup | 92.5 g | 3.26 oz | 118.3 mL |
| 1/3 cup | 61.67 g | 2.18 oz | 78.86 mL |
| 1/4 cup | 46.25 g | 1.63 oz | 59.15 mL |
| 1 tbsp | 11.56 g | 0.408 oz | 14.79 mL |
| 1 tsp | 3.854 g | 0.136 oz | 4.929 mL |
US customary measures: 1 cup = 236.59 mL, 1 tbsp = 14.79 mL, 1 tsp = 4.93 mL.
| Ingredient | Grams per cup | Ounces per cup | Density (g/mL) |
|---|---|---|---|
| Semolina | 167 g | 5.891 oz | 0.7059 |
| Uncooked quinoa | 170 g | 5.997 oz | 0.7185 |
| Dry couscous | 170 g | 5.997 oz | 0.7185 |
| Uncooked white rice (this page) | 185 g | 6.526 oz | 0.7819 |
| Uncooked brown rice | 190 g | 6.702 oz | 0.8031 |
| Dried lentils | 192 g | 6.773 oz | 0.8115 |
| Granulated sugar | 200 g | 7.055 oz | 0.8454 |
Ordered by weight. The spread across this group is why a single generic cups-to-grams factor cannot work.