Grams of Rice to Cups
Convert grams of uncooked white rice to cups at 185 g a cup — uncooked, which is where most of the confusion starts.
Updated
cups of white rice (uncooked)
0.54cups
100 grams of white rice (uncooked) = 0.54 cups
Values use the 240 ml US cup, spoon-and-level — your bag’s label may differ slightly.
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In short
How many cups is 100 grams of rice?
0.54 cups of uncooked white rice, since a cup holds 185 g. Uncooked is the important word: rice roughly triples in weight as it absorbs water, so 100 g dry becomes about 300 g cooked, and the two readings are not interchangeable.
Every figure on this page is dry, uncooked rice. Cooked rice is a different measurement entirely.
Grams to cups — quick reference
| White rice (uncooked) (g) | Cups |
|---|---|
| 25 g | 0.14 cups |
| 50 g | 0.27 cups |
| 75 g | 0.41 cups |
| 100 g | 0.54 cups |
| 125 g | 0.68 cups |
| 150 g | 0.81 cups |
| 200 g | 1.08 cups |
| 250 g | 1.35 cups |
| 500 g | 2.7 cups |
The formula, worked line by line
One division by 185. The arithmetic is straightforward and the ingredient is well behaved; the entire risk on this page sits in a single adjective attached to the input.
“Rice is the one ingredient where the largest error is not in how you measure it but in which version of it you were measuring.”
That is why every figure here is labelled dry. A conversion that quietly accepted either state would be wrong by a factor of three about half the time, which is worse than not converting at all.
cups = grams / 185
grams = cups x 185
100 g / 185 = 0.54 cups
500 g / 185 = 2.7 cups
cooked weight, roughly: dry grams x 3- Servings
- 4
- Dry rice at 75 g each
- 300 g
- Converted
- 1.62 cups
- Water by absorption, 1.5 to 1
- 450 g
- Cooked yield
- about 900 g
- On the plate
- about 225 g each
Working entirely from the dry weight makes every other figure fall out of it: the water, the yield and the portion size. Starting from a cup measurement instead means carrying an extra conversion into each of those steps, with a rounding error at every one.
The rice cooker cup, which is not a cup
Rice cookers are supplied with a measure of about 180 ml, the traditional Japanese go, and the water lines inside the pot assume it. Filling that measure with a US cup of rice puts about twenty percent too much in, and the marked water line then gives too little liquid for the amount present.
How the varieties compare
- Long-grain white rice
- 185 g
- Basmati and jasmine
- close to the same
- Short-grain and sushi rice
- slightly heavier
- Brown rice
- slightly lighter
- A rice cooker measure
- about 150 g, not a cup
The variety differences are small enough to ignore for most cooking. The last row is not a variety at all and is the one that actually changes results, because it is a different sized vessel being used as though it were this one.
Two things to carry away: the number on this page is dry rice, and the cup that came with your rice cooker is not the cup this page means.
How to use the grams of rice to cups
Divide by 185. That is one cup of uncooked long-grain white rice, and like sugar it is a well-behaved measurement: rice grains are hard, roughly uniform and do not compress, so the cup holds much the same weight however you fill it.
The complication is not technique but state. Rice absorbs two to three times its own weight in water as it cooks, so a recipe specifying 300 g of rice is describing two very different quantities depending on whether it means before or after. A dish built on 300 g dry serves roughly three times as many people as one built on 300 g cooked.
185 g
One cup of uncooked rice
long-grain white
0.54
Cups in 100 g
a little over a half
about 3x
Weight gain when cooked
100 g dry to about 300 g
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The way to tell which is meant is usually the context. A recipe that starts by cooking the rice means dry. One that uses rice as an ingredient in something else, such as a salad, a stuffing or a fried rice, almost always means cooked, and often says so with the word leftover.
Different rices vary a little but not dramatically. Long-grain white, basmati and jasmine all sit close to the same figure. Short-grain and sushi rice pack slightly tighter, and brown rice is a touch lighter because the bran keeps the grains apart. None of these gaps approaches the size of the cooked-versus-dry difference.
- 50 g
- 0.27 cups
- 75 g
- 0.41 cups, a portion
- 100 g
- 0.54 cups
- 185 g
- 1 cup exactly
- 200 g
- 1.08 cups
- 250 g
- 1.35 cups
- 500 g
- 2.7 cups
A dry portion is usually taken as 75 g per person, which comes to about 0.4 cups and cooks up to roughly 225 g on the plate. Four portions is 300 g dry, a shade over one and a half cups, which is a useful figure to carry for a family meal.
Every ingredient in one place
The main grams to cups page carries all fourteen densities together, from oats at 90 g a cup up to honey at 340, with the ingredient picker built in.
Open grams to cups →Uncooked white rice weights converted to cups at 185 g per cup, with the approximate cooked weight and the number of servings each represents.
| Grams, dry | Cups | Cooked weight | Servings |
|---|---|---|---|
| 25 g | 0.14 | about 75 g | 0.3 |
| 50 g | 0.27 | about 150 g | 0.7 |
| 75 g | 0.41 | about 225 g | 1 |
| 100 g | 0.54 | about 300 g | 1.3 |
| 150 g | 0.81 | about 450 g | 2 |
| 185 g | 1 | about 555 g | 2.5 |
| 200 g | 1.08 | about 600 g | 2.7 |
| 250 g | 1.35 | about 750 g | 3.3 |
| 300 g | 1.62 | about 900 g | 4 |
| 500 g | 2.7 | about 1,500 g | 6.7 |
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Cooked against dry, and how to tell which is meant
This is the only real trap in measuring rice, and it is a large one. Rice absorbs water as it cooks and gains roughly two to three times its own weight, depending on the variety and how much water it is given. Nothing about a gram figure on its own says which state it refers to.
- If dry
- 1.62 cups uncooked
- Cooks up to
- roughly 900 g
- Serves
- about four people
- If cooked
- came from about 100 g dry
- Serves
- about one to two people
- Difference
- roughly threefold
A recipe read the wrong way round produces either a third of the food expected or three times it. This is a much larger error than any measuring inaccuracy on this shelf, and it comes entirely from a word that recipes often leave out.
The reliable signal is where the rice appears in the method. If step one involves water, stock or a pan, the figure is dry. If the rice is added to something already cooked, the figure is cooked. When neither is clear, assume dry for a main dish and cooked for a salad or a filling.
Getting the water right from the dry weight
Once you have the dry weight, the water follows from it, and working by weight is considerably more reliable than the finger method or the lines inside a pan. Long-grain white rice takes around one and a half times its weight in water by the absorption method, and more if it is to be drained.
Do
- Establish whether the recipe means cooked or dry rice first
- Use 75 g dry per person as a working portion
- Measure water against the dry weight rather than by eye
- Rinse long-grain rice before cooking to remove surface starch
Don't
- Use a rice cooker cup as though it were a US cup
- Assume brown rice takes the same water and time as white
- Convert a cooked-rice weight with this dry figure
- Add the water before you know which state the recipe meant
Brown rice is the exception worth stating separately. It keeps its bran layer, so it takes noticeably more water and roughly twice the cooking time, and it absorbs less overall. Applying a white-rice ratio to it produces something undercooked with liquid still in the pan.
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Questions people ask
How many cups is 100 grams of rice?
0.54 cups of uncooked white rice, a little over half, since a cup holds 185 g. That figure is for dry rice. The same 100 g would come to roughly 300 g once cooked, because rice absorbs about twice its own weight in water during cooking.
Does this figure mean cooked or uncooked rice?
Uncooked. Every number on this page is dry rice, and the distinction matters more than any measuring detail: rice roughly triples in weight as it cooks, so reading a recipe the wrong way round gives either a third of the food you expected or three times it.
How much dry rice is one serving?
Around 75 g per person, which is about 0.4 cups and cooks up to roughly 225 g on the plate. Four servings is 300 g dry, a shade over one and a half cups. Working from the dry weight also makes the water easy, at about one and a half times the rice by weight.
Is the cup that came with my rice cooker a US cup?
No. Rice cooker measures are usually the Japanese go, about 180 ml, holding roughly 150 g of rice against 185 g for a US cup. The water lines inside the pot are calibrated to that measure, so using a standard cup puts in about twenty percent more rice than the marked line expects.
Does brown rice convert the same way?
Close for volume, different for cooking. Brown rice keeps its bran layer, so it is slightly lighter per cup, but it takes noticeably more water and about twice the cooking time. Applying a white-rice water ratio and timing to it leaves it undercooked with liquid still sitting in the pan.
Sources
Where the constants and formulas on this page come from. Each line names the figure it backs.
One cup of uncooked white rice weighs 185 g, against 90 g for rolled oats and 120 g for all-purpose flour.
Ingredient Weight Chart — King Arthur Baking
Cooked white rice contains substantially more water than the raw grain, which is the basis of the roughly threefold weight gain during cooking.
FoodData Central — Rice, white, long-grain — US Department of Agriculture
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