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How Many Calories in Seaweed, Spirulina, Raw?

✓ Nutrition data reviewed against USDA FoodData Central and Public Health England guidance by Jordan Morley, Editorial Reviewer. Last reviewed: 27 October 2026.

Fact-checked against original USDA source data by Jordan Morley, Editorial Reviewer. Not a registered dietitian — nutrition figures are sourced directly from USDA FoodData Central, not independently assessed medical advice.

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26
calories per 100g
26 calories per ['100g serving', 100] (100g)
MORiSH high-protein snacks — try alongside
5.9gProtein
2.4gCarbs
0.4gFat
0.4gFibre

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⚖ Kitchen Scales

Quick reference — common serving sizes

AmountCaloriesProtein
1 oz (28g)7 kcal1.7g
100g26 kcal5.9g
grams
26kcal
5.9gprotein
2.4gcarbs
0.4gfat
0.4gfibre

A seaweed, spirulina, raw contains 26 calories per 100g. A typical ['100g serving', 100] (100g) provides about 26 calories. Seaweed, Spirulina, Raw is low in calories. Accurate tracking starts with weighing portions — a digital kitchen scale removes all the guesswork.

Seaweed, Spirulina, Raw Nutrition Facts

NutrientPer 100gPer serving (100g)
Calories26 kcal26 kcal
Protein5.9g5.9g
Carbohydrates2.4g2.4g
of which Sugars0.3g0.3g
Fat0.4g0.4g
of which Saturates0.1g0.1g
Fibre0.4g0.4g
Sodium98.0mg98mg
Potassium127.0mg127mg
Calcium12.0mg12mg
Iron2.8mg2.8mg
Vitamin C0.9mg0.9mg
Vitamin A3.0µg3µg
Selenium0.7µg1µg
Riboflavin (B2)0.3mg0.3mg

% 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.

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Have a cat or dog? Check whether seaweed, spirulina, 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 seaweed, spirulina, raw for the week. Tracking supplements too? Check drug and supplement interactions before combining anything new.

Good to know

Cooking method matters here too — boiling can leach some water-soluble vitamins into the cooking water, while steaming or roasting tends to retain more.

Does seaweed, spirulina, raw fit your diet?

Low-carb / keto

Seaweed, Spirulina, Raw contains 2.4g 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 26 calories per 100g, seaweed, spirulina, 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 seaweed, spirulina, raw per 100g?

Seaweed, Spirulina, Raw contains 26 calories per 100g, based on USDA reference data.

Is seaweed, spirulina, raw high in calories?

A ('100g serving', 100) of seaweed, spirulina, raw (100g) has around 26 calories — roughly 1% of a 2,000-calorie daily intake.

Is seaweed, spirulina, raw good for weight loss?

At 26 calories per 100g, seaweed, spirulina, raw is relatively low in calories and can fit well into a weight-loss diet. A ('100g serving', 100) provides about 26 calories.

How much protein is in seaweed, spirulina, raw?

Seaweed, Spirulina, Raw contains 5.9g of protein per 100g.

Is seaweed, spirulina, raw a good source of fibre?

Seaweed, Spirulina, Raw is relatively low in fibre at 0.4g per 100g, so pairing it with fibre-rich sides (vegetables, whole grains, legumes) can help balance a meal.

How does seaweed, spirulina, raw compare to broccoli, frozen, chopped, unprepared?

Seaweed, Spirulina, Raw has 26 calories per 100g, close to broccoli, frozen, chopped, unprepared at 26 — 0 calories fewer per 100g. See the full macro breakdown above.

Is seaweed, spirulina, raw keto-friendly?

Seaweed, Spirulina, Raw contains 2.4g 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 seaweed, spirulina, raw for 20g of protein?

With 5.9g of protein per 100g, you'd need roughly 339g of seaweed, spirulina, raw to reach 20g of protein

Foods with a similar calorie count

Other vegetables closest to seaweed, spirulina, raw by calories per 100g:

FoodCaloriesProteinCarbsFat
Seaweed, Spirulina, Raw (this page)26 kcal5.9g2.4g0.4g
Broccoli, Frozen, Chopped, Unprepared26 kcal2.8g4.8g0.3g
Mushrooms, White, Stir-fried26 kcal3.6g4.0g0.3g
Mustard Greens, Cooked, Boiled, Drained, without Salt26 kcal2.6g4.5g0.5g
Pumpkin, Raw26 kcal1.0g6.5g0.1g
Seaweed, Agar, Raw26 kcal0.5g6.8g0.0g
Tomatoes, Red, Ripe, Canned, Stewed26 kcal0.9g6.2g0.2g

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Last updated:

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