Fresh spirulina: calories and nutrition facts

Fresh spirulina has 36 kcal per 100 g. One serving, 1 Teaspoon (10 g), has 4 kcal.

Calories: 36 kcal
Protein: 5.9 g
Carbohydrates: 2 g
Fat: 0.4 g

Per 100 g

Fresh spirulina: how many calories?

Fresh spirulina has 36 kcal per 100 g, with 5.9 g protein, 2 g carbs and 0.4 g fat. A 10 g serving (1 Teaspoon) has 4 kcal. That is less than the average for Cooking Aids & Ingredients (199 kcal per 100 g). Most of its calories come from protein.

Where the calories come from

Protein67%
Carbohydrates23%
Fat10%

Calculate a portion

Amountg

Calories: 4 kcal
Protein: 0.6 g
Carbohydrates: 0.2 g
Fat: 0 g

Nutrition facts

Nutrient	Per 100 g	Per serving (10 g)
Calories	36 kcal	4 kcal
Fat	0.4 g	0 g
of which saturated fat	0.1 g	0 g
Carbohydrates	2 g	0.2 g
of which sugars	0.3 g	0 g
Fiber	0.4 g	0 g
Protein	5.9 g	0.6 g
Sodium	98 mg	10 mg
Water	90.7 g	9.1 g
Vitamin C	0.9 mg	0.1 mg
Calcium	12 mg	1 mg
Iron	2.8 mg	0.3 mg
Potassium	127 mg	13 mg
Magnesium	19 mg	2 mg

Source: Ciqual food composition table (ANSES, France). Data updated on 20 December 2025.

Share of reference intakes

Per 100 g, compared with an adult's reference intakes (2,000 kcal a day, Regulation (EU) No 1169/2011).

Nutrient	Of reference intake
Calories(36 kcal)	2%
Fat(0.4 g)	1%
of which saturated fat(0.1 g)	1%
Carbohydrates(2 g)	1%
of which sugars(0.3 g)	0%
Protein(5.9 g)	12%
Salt(0.25 g)	4%

What the EU thresholds say

Nutrition claim thresholds from Regulation (EC) No 1924/2006, per 100 g.

Low energy (40 kcal or less)
High protein (at least 20% of calories)
Low fat (3 g or less)
Low sugars (5 g or less)
Low sodium (120 mg or less)

Fresh spirulina: frequently asked questions

Fresh spirulina: how many calories per serving?

A 10 g serving (1 Teaspoon) has 4 kcal.

Fresh spirulina: how much protein?

Fresh spirulina contains 5.9 g of protein per 100 g, 12% of the 50 g reference intake.

Fresh spirulina: how much fibre?

Fresh spirulina provides 0.4 g of fibre per 100 g, 2% of the 25 g a day recommended by EFSA.

Fresh spirulina: how much makes 100 kcal?

100 kcal is about 277 g of this food.

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