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Breast milk calories

Breast milk, human, mature, fluid
22kcal
1 fluid ounce · 30 g, human, mature, fluid
6%protein
0.3 gProtein
2 gCarbs
1.3 gFat
How to burn off 22 kcal
—Walking, brisk
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—Cycling, moderate
—Swimming
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Nutrition facts
Human, mature, fluid · per 30 g
Calories22 kcal
Protein0.3 g
Carbohydrate2.1 g
Fat1.3 g
Saturated fat0.6 g
Cholesterol4 mg
Sodium5 mg
Potassium16 mg
Iron0 mg

Source: USDA FoodData Central

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Verified nutrition data

Numbers on this page come from USDA FoodData Central, the U.S. Department of Agriculture’s food composition database, and from manufacturer labels where a branded product is named. Last verified September 2026. How we verify our data →

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Breast milk FAQs
How many calories are in one ounce of breast milk?

About 22 calories per fluid ounce (30.8 g), or 172 calories per cup (246 g).

Does breast milk have more calories than cow's milk?

Yes, slightly: breast milk has 70 calories per 100 g, compared with 60 for a glass of milk.

How much fat is in breast milk?

Breast milk has 4.4 g of fat per 100 g, which is about 10.8 g per cup (246 g).

How much sugar and protein is in breast milk?

Per 100 g it has 6.9 g of sugar and 1.0 g of protein, or about 16.9 g of sugar and 2.5 g of protein per cup.