White Rice Nutrition Calculator — Long-Grain, Medium-Grain, Instant & Parboiled

One cup (158g) of cooked long-grain enriched white rice provides approximately 205 calories, 4.3g protein, 44.5g carbohydrates, and 0.4g fat ^[1]. Per 100g cooked, the calorie count is 130 kcal — slightly higher than brown rice (123 kcal) due to white rice's denser starch packing and lower water absorption during cooking.

White rice is 68.4% water after cooking, with carbohydrates making up the vast majority of the remaining dry weight ^[1]. These carbohydrates are almost entirely starch (28.17g per 100g), with negligible sugar (0.05g) and minimal dietary fiber (0.4g). The protein content of 2.69g per 100g is modest and incomplete — white rice is low in the essential amino acid lysine ^[2].

The calorie density of white rice makes it an efficient energy source for physically active individuals, but it also means portion awareness matters. A restaurant-sized portion of rice (300–400g cooked) can easily deliver 390–520 calories from rice alone, before any curry, sauce, or protein is added.

Milling white rice removes the bran and germ layers, stripping approximately 85% of fat, 75% of phosphorus, 90% of calcium, and 70% of B-vitamins compared to brown rice ^[2]. Enrichment is the process of adding back specific nutrients — primarily iron, thiamine (B1), niacin (B3), and folic acid — to partially compensate for these losses.

Enriched white rice provides 1.2mg iron (7% DV) and 0.163mg thiamine (14% DV) per 100g cooked, compared to just 0.2mg iron and 0.02mg thiamine in unenriched white rice ^[1]. Folate reaches 58 mcg (15% DV) in enriched versions through mandatory folic acid fortification, compared to only 3 mcg in unenriched rice. This fortification has been a significant factor in reducing folate deficiency-related conditions ^[3].

However, enrichment does not restore fiber, magnesium, or phytochemicals that were removed during milling. Unenriched white rice retains only 0.4g fiber per 100g cooked (vs. 1.6g in brown rice) and 12mg magnesium (vs. 39mg in brown rice) ^[1]. The choice between enriched and unenriched white rice is nutritionally significant — always check whether your rice is labeled "enriched" or "fortified."

White rice glycemic index varies more widely than most people realise. Published GI values range from 64 for some long-grain varieties to 93 for short-grain glutinous rice ^[2]. This range is primarily determined by the ratio of amylose to amylopectin starch — higher amylose content (20–30%) produces firmer, separate grains with lower GI, while higher amylopectin content (as in sticky rice) produces softer, clumpier rice with higher GI.

Long-grain white rice (including Basmati) generally has the highest amylose content and lowest GI among white rice varieties. Medium-grain rice falls in the middle, and short-grain / sushi rice tends toward the higher GI end due to its greater amylopectin proportion ^[2]. Parboiled (converted) rice has a lower GI than conventionally milled rice because the parboiling process gelatinises starch in a way that slows subsequent digestion.

Cooking method also affects glycemic response. Overcooking rice increases its GI by further gelatinising the starch, making it more rapidly digestible. Conversely, cooling cooked rice and then reheating it increases resistant starch formation, which reduces the effective glycemic impact of the meal ^[3].

One of the most common sources of calorie-tracking errors with rice is confusing raw and cooked values. Dry white rice contains 365 calories per 100g, while the same weight of cooked rice contains only 130 calories ^[1]. The difference is entirely due to water absorption — white rice absorbs approximately 2.5–3× its weight in water during cooking, diluting the calorie density by roughly 64%.

This means 100g of dry rice produces approximately 275–300g of cooked rice, not 200g as commonly assumed. When a recipe calls for "1 cup of rice," it typically means 1 cup dry (185g, ~675 calories), which yields roughly 3 cups cooked (about 475g, still ~675 calories total). The calories don't change — only the weight and volume increase ^[1].

For accurate nutrition logging, always clarify whether you're measuring rice before or after cooking. The per-serving calorie difference between "100g raw" (365 kcal) and "100g cooked" (130 kcal) is 235 calories — enough to significantly distort daily intake calculations if confused.

White rice is rarely discussed as a mineral source, but cooked long-grain provides 0.472mg manganese per 100g (21% DV) — a single cup delivers approximately 0.75mg (32% DV) ^[1]. Manganese is a cofactor for superoxide dismutase and plays roles in bone formation, blood clotting, and carbohydrate metabolism. Among common staple grains, white rice is one of the best everyday sources.

Selenium content is 7.5 mcg per 100g cooked (14% DV), which is meaningful given that selenium functions as a cofactor for glutathione peroxidase and is involved in thyroid hormone metabolism ^[1]. A single cup of white rice contributes approximately 11.9 mcg selenium. The selenium content varies by growing region — rice grown in selenium-rich soils (such as parts of the U.S.) tends to have higher levels.

Other minerals present in moderate amounts include phosphorus (43mg, 3% DV) and zinc (0.49mg, 5% DV). White rice is notably low in potassium (35mg), calcium (10mg), and magnesium (12mg) compared to whole grains ^[1]. Pairing white rice with potassium-rich foods (vegetables, legumes) helps compensate for these gaps in the overall meal.