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How Many Calories in Rhubarb, Raw?

Nutrition data reviewed against USDA FoodData Central and Public Health England guidance by our editorial team. Last reviewed: 5 September 2026.

Fact-checked against original USDA source data by our editorial team.

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21
calories per 100g
26 calories per 1 cup, diced (122g)
MORiSH high-protein snacks — try alongside
0.9gProtein
4.5gCarbs
0.2gFat
1.8gFibre

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⚖ Kitchen Scales

Quick reference — common serving sizes

AmountCaloriesProtein
1 oz (28g)6 kcal0.3g
100g21 kcal0.9g
1 cup, diced26 kcal1.1g
grams
21kcal
0.9gprotein
4.5gcarbs
0.2gfat
1.8gfibre

A rhubarb, raw contains 21 calories per 100g. A typical 1 cup, diced (122g) provides about 26 calories. Rhubarb, Raw is low in calories. Accurate tracking starts with weighing portions — a digital kitchen scale removes all the guesswork.

Rhubarb, Raw Nutrition Facts

NutrientPer 100gPer serving (122g)
Calories21 kcal26 kcal
Protein0.9g1.1g
Carbohydrates4.5g5.5g
of which Sugars1.1g1.3g
Fat0.2g0.2g
of which Saturates0.1g0.1g
Fibre1.8g2.2g
Sodium4.0mg5mg
Potassium288.0mg351mg
Calcium86.0mg105mg
Iron0.2mg0.2mg
Vitamin C8.0mg9.8mg
Vitamin A5.0µg6µg
Selenium1.1µg1µg
Riboflavin (B2)0.0mg0.0mg

% of Daily Value (per 100g)

Based on a standard 2,000-calorie reference diet — the same basis used on nutrition labels in the US and UK.

Useful for tracking rhubarb, raw

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Have a cat or dog? Check whether rhubarb, raw is safe for your dog or safe for your cat before sharing. Also check the full ingredient breakdown and food safety guide for pregnancy and storage advice. Use a meal prep container set to portion out rhubarb, raw for the week. Tracking supplements too? Check drug and supplement interactions before combining anything new.

Good to know

Ripeness affects sugar content — a very ripe piece of fruit can carry noticeably more natural sugar than an under-ripe one of the same size.

Does rhubarb, raw fit your diet?

Low-carb / keto

Rhubarb, Raw contains 4.5g of carbohydrate per 100g, low enough to fit comfortably within most low-carb or ketogenic daily carb allowances — check the fat and protein split above against your specific macro targets.

Weight management

At 21 calories per 100g, rhubarb, raw is calorie-light relative to its volume, which can help keep a meal within a calorie target without needing very small portions.

Frequently Asked Questions

How many calories in rhubarb, raw per 100g?

Rhubarb, Raw contains 21 calories per 100g, based on USDA reference data.

Is rhubarb, raw high in calories?

A 1 cup, diced of rhubarb, raw (122g) has around 26 calories — roughly 1% of a 2,000-calorie daily intake.

Is rhubarb, raw good for weight loss?

At 21 calories per 100g, rhubarb, raw is relatively low in calories and can fit well into a weight-loss diet. A 1 cup, diced provides about 26 calories.

How much protein is in rhubarb, raw?

Rhubarb, Raw contains 0.9g of protein per 100g.

Is rhubarb, raw a good source of fibre?

Rhubarb, Raw is relatively low in fibre at 1.8g per 100g, so pairing it with fibre-rich sides (vegetables, whole grains, legumes) can help balance a meal.

How does rhubarb, raw compare to rhubarb, frozen, uncooked?

Rhubarb, Raw has 21 calories per 100g, close to rhubarb, frozen, uncooked at 21 — 0 calories fewer per 100g. See the full macro breakdown above.

Is rhubarb, raw keto-friendly?

Rhubarb, Raw contains 4.5g of carbohydrate per 100g, which fits comfortably within most ketogenic daily carb allowances — check it against your specific daily carb target.

How many servings of rhubarb, raw for 20g of protein?

With 0.9g of protein per 100g, you'd need roughly 2222g of rhubarb, raw to reach 20g of protein

Foods with a similar calorie count

Other fruits closest to rhubarb, raw by calories per 100g:

FoodCaloriesProteinCarbsFat
Rhubarb, Raw (this page)21 kcal0.9g4.5g0.2g
Rhubarb, Frozen, Uncooked21 kcal0.6g5.1g0.1g
Apricots, Canned, Water Pack, without Skin22 kcal0.7g5.5g0.0g
Peaches, Canned, Water Pack, Solids and Liquids24 kcal0.4g6.1g0.1g
Rose-apples, Raw25 kcal0.6g5.7g0.3g
Naranjilla (lulo) Pulp, Frozen, Unsweetened25 kcal0.4g5.9g0.2g
Apricots, Canned, Water Pack, with Skin27 kcal0.7g6.4g0.2g

More kit for rhubarb, raw tracking

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Digital Kitchen Scales

Weigh your fruit for accurate portion tracking.

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Last updated:

Nutrition data: USDA FoodData Central (public domain, CC0 1.0). Values are per 100g unless stated.