Red Rice Nutrition Calculator — Kerala, Bhutanese, Cargo & Camargue Varieties

Red rice owes its colour to proanthocyanidins and anthocyanins concentrated in its intact bran layer ^[2]. Unlike white rice, which has been milled to remove the bran and germ, red rice retains both, making it a whole-grain rice with a nutritional profile closer to brown rice than white rice. The red pigment is not merely cosmetic — it represents bioactive compounds absent from polished rice.

This intact bran delivers 1.8g dietary fiber per 100g cooked — 4.5× more than white rice (0.4g) and matching brown rice's fiber content ^[2]. The fiber is primarily insoluble, concentrated in the bran's outer layers, which also contain the majority of the grain's minerals and B-vitamins. Removing this layer (as in white rice processing) strips these nutrients along with the colour.

Red rice is cultivated across diverse regions — Kerala red rice (Matta rice) from South India, Bhutanese red rice from the Himalayas, Camargue red rice from France, and Thai Red Cargo rice from Southeast Asia ^[3]. Each variety has slightly different bran thickness and pigment intensity, but all share the fundamental nutritional advantage of an intact whole-grain structure.

Cooked red rice provides approximately 123 calories per 100g — identical to brown rice and 5% less than white rice (130 kcal) ^[2]. A standard 1-cup serving (195g) delivers roughly 240 calories, 5.5g protein, and 49.7g carbohydrates. The macronutrient profile is virtually interchangeable with brown rice for nutrition tracking purposes.

Protein content at 2.8g per 100g cooked is slightly above white rice (2.69g) but marginally below brown rice (2.74g) ^[2]. In dry form, red rice protein reaches 7.5g per 100g, which is in the typical range for whole-grain rice varieties. The fat content of 0.9g per 100g cooked comes entirely from the retained germ and bran, consisting primarily of polyunsaturated and monounsaturated fatty acids.

The glycemic index of red rice ranges from 55 to 65, placing it in the low-to-moderate range ^[3]. This is comparable to brown rice and substantially lower than medium or short-grain white rice. The lower GI is attributed to the bran layer's fiber slowing starch digestion and the higher amylose content typical of many red rice varieties.

Red rice provides 0.7mg iron per 100g cooked — higher than unenriched white rice but lower than enriched white rice (1.2mg) ^[2]. In its dry form, iron reaches 2.0mg per 100g. The iron in red rice is naturally present in the bran, while the iron in enriched white rice is added as a fortification coating. This distinction matters because enrichment iron can be washed away if the rice is rinsed before cooking.

Zinc content of 0.7mg per 100g cooked exceeds white rice (0.49mg) and matches the lower range of brown rice ^[4]. Magnesium at 38mg is nearly identical to brown rice (39mg) and 3.2× white rice's 12mg. Phosphorus at 95mg also closely tracks brown rice and substantially exceeds white rice's 43mg.

Manganese at 0.9mg per 100g cooked is the standout mineral, approaching brown rice's 0.97mg and far exceeding white rice's 0.47mg ^[2]. Combined with selenium at 6.5 mcg, the mineral profile positions red rice as a natural whole-grain alternative that doesn't rely on enrichment to deliver its micronutrients. The trade-off is lower folate (7 mcg vs. 58 mcg in enriched white rice).

Red rice typically requires 25–30 minutes of cooking time — longer than white rice (15–20 min) but shorter than wild rice (45–60 min) ^[3]. The intact bran layer resists hydration initially, requiring a slightly higher water-to-rice ratio of approximately 2.25:1 compared to white rice's 1.5–2:1.

The choice of cooking method significantly affects nutrient retention. The absorption method (measuring exact water that's fully absorbed during cooking) retains water-soluble B-vitamins, folate, and some of the bran's pigment compounds. The draining method (cooking in excess water and draining) can leach up to 40% of thiamine and 25% of folate into the discarded water ^[4].

Parboiled red rice — a traditional preparation in South India (Kerala Matta rice is often parboiled) — pre-gelatinises the starch and drives some B-vitamins from the bran into the endosperm before polishing ^[3]. This means parboiled red rice retains approximately 20% more thiamine and niacin than non-parboiled red rice cooked by the draining method. The GI also tends to be marginally lower in parboiled varieties.

All three pigmented rice types — red, brown, and black — are whole grains with intact bran layers, but each offers a slightly different nutritional emphasis. Red rice delivers strong manganese (0.9mg) and selenium (6.5 mcg) with moderate pigment compounds. Brown rice has the highest manganese (0.97mg) and magnesium (39mg). Black rice provides the highest protein (3.5g) and the most anthocyanins ^[2].

From a calorie perspective, all three are nearly identical: red at 123 kcal, brown at 123 kcal, and black at 116 kcal per 100g cooked. Fiber is also comparable at 1.6–1.8g across all three types ^[4]. The primary distinguishing factor is their bioactive pigment content — proanthocyanidins in red rice, phytic acid compounds in brown rice, and anthocyanins in black rice.

For everyday use in South Indian cuisine, red rice is the traditional default and pairs naturally with sambar, rasam, and curries. Brown rice is more neutral in flavour and works across global cuisines. Black rice has a distinctive nutty taste and dramatic colour that suits grain bowls and desserts. Nutritionally, rotating between all three provides the broadest spectrum of whole-grain compounds.