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The Uncooked to Cooked Rice Calculator converts between dry (uncooked) and cooked rice weights in both directions. This conversion is essential for recipe scaling, nutrition tracking, and meal planning — particularly because most rice nutrition labels provide values per 100 g of dry rice, while most recipe instructions and serving descriptions reference cooked weight.
The fundamental reason dry rice weighs so much less than cooked rice is water absorption. Raw dry rice contains about 10–14% moisture by weight. During cooking, rice absorbs water (or in the case of boiling with excess water, some water is absorbed and the rest drained). The starch granules in the rice swell as they gelatinize, absorbing water molecules between the starch chains. White long-grain rice and jasmine rice absorb roughly 2× their own weight in water during cooking, meaning 1 g of dry rice becomes approximately 3 g of cooked rice (the original grain weight plus 2× water weight). Brown rice absorbs slightly less water due to its bran layer, yielding approximately 2.5× its dry weight.
This 3× factor (for white rice) and 2.5× factor (for brown rice) are industry-standard approximations used in nutrition databases, food service, and recipe development. They represent averages across cooking methods — the actual yield can vary by approximately ±10% depending on rinsing, soaking, cooking method, and how much water is in the pot.
For calorie and macronutrient tracking, it is critical to use the correct weight reference. If a label states 350 kcal per 100 g of dry rice, and you eat 300 g of cooked white rice, you have consumed the nutritional equivalent of 100 g dry rice (300 ÷ 3) = 350 kcal. Many tracking errors arise from applying dry-rice nutrition values to cooked-rice weights or vice versa, resulting in calorie estimates that are off by a factor of 3.
Cooked weight from dry: Cooked = Dry × Yield factor
Dry weight from cooked: Dry = Cooked ÷ Yield factor
Yield factors: White rice (long grain, jasmine, basmati) = 3.0; Brown rice = 2.5
Side dish servings = Dry weight ÷ 75 g per serving
Main course servings = Dry weight ÷ 100 g per serving
The result is an approximate equivalent weight. The conversion factor shown is what was applied. Use the servings figures to cross-check whether the amount you are converting aligns with the number of people you are cooking for.
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250 g dry white rice yields approximately 750 g cooked — enough for 3–4 side servings or 2–3 main servings.
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To get 600 g of cooked brown rice, you need to start with 240 g of dry brown rice.
Approximately yes — 1 cup of dry white rice (about 185 g) produces about 3 cups (or 550 g) of cooked rice, not 2 cups. The common '1 cup dry = 2 cups cooked' approximation is an underestimate. The correct factor is approximately 3× by weight and about 2.5–3× by volume, because cooked rice is denser than a loose cup measure suggests.
Brown rice has a bran layer that slows water absorption and limits how much the grain can swell during cooking. White rice, which has had the bran removed, can absorb more water relative to its dry weight, yielding 3× cooked weight. Brown rice yields approximately 2.5× because the bran limits swelling.
For the most accurate tracking, weigh the dry (uncooked) rice before cooking. Most nutrition databases list calories for dry rice per 100 g. If you only have cooked rice: divide the cooked weight by the conversion factor (3 for white, 2.5 for brown) to get the equivalent dry weight, then apply the nutrition values per 100 g dry rice.
Recipes that specify amounts in grams are almost always referring to dry rice. Cup measurements can be either — recipes that say '1 cup cooked rice' mean the measured cooked volume. When in doubt, look at the context: if water ratio instructions follow, the rice quantity is dry. If the rice appears in a salad or mixed dish recipe, it may be cooked.
Minimally. Rinsed rice loses a small amount of surface starch but the absorption factor remains essentially the same. The difference in cooked yield between rinsed and unrinsed rice is within 2–3% — negligible for practical purposes.
A standard restaurant side portion is approximately 200–230 g of cooked white rice, which corresponds to about 70–75 g of dry rice. A main-course serving (as in a rice bowl) is typically 280–350 g cooked, corresponding to 95–115 g dry. These figures vary by cuisine — Asian rice portions tend to be larger, European side portions smaller.
Two cups of cooked white rice weighs approximately 370 g (assuming 185 g per cup of cooked rice). Applying the reverse factor: 370 ÷ 3 ≈ 123 g dry rice, or about 2/3 cup of dry rice. The 'half the volume dry' approximation (use 1 cup dry for 2 cups cooked) is a widely used rule of thumb that is close but slightly underestimates.
Leftover rice that has been refrigerated absorbs a small amount of additional water from residual steam and can also dry out slightly depending on storage. For practical purposes, the same conversion factor applies — the difference is within the normal ±10% variation of the conversion. Use freshly cooked rice weights for calorie tracking when possible.
Yes. Fried rice is typically made with day-old cooked rice. The conversion gives you the dry rice quantity needed to produce the cooked rice for the fried rice dish. Note that fried rice itself changes weight again during cooking due to oil absorption and evaporation of moisture — the conversion here applies only to the initial dry-to-cooked stage.
Yes: multiply dry rice by 3 to get cooked (white rice). Divide cooked rice by 3 to get dry. For brown rice, multiply by 2.5 or divide by 2.5. These simple factors are accurate to within 10% for typical cooking conditions and are the standard used by nutritionists and food service planners.
Roboculator Team
The Roboculator Team explains calculations, planning tools, and practical formulas in clear language for real-life situations.
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