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Sweet potato calories and nutrition facts
100 grams of sweet potato contains 90 calories, with 2 g of protein, 20.7 g of carbohydrate and 0.2 g of fat. It provides 3.3 g of fiber and 6.5 g of sugar per 100 g. Most of its calories come from carbohydrate.
Sweet potato earns its name honestly — a share of its carbohydrate is sugar, which is why it caramelises so well in the oven. Calorie-wise it sits close to regular potato, not below it; the difference is flavour and a little fibre. A "medium" one is around 130 g, but real specimens run from 80 g to 300 g.
Where the calories come from
Protein 9% Carbs 89% Fat 2%
How sweet potato compares
Per 100 g, against the closest potatoes in this database.
| Food | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|
| Sweet potato | 90 kcal | 2 g | 20.7 g | 0.2 g |
| Canned sweet potato | 91 kcal | 1.7 g | 21.1 g | 0.2 g |
| White potato, baked | 92 kcal | 2.1 g | 21.1 g | 0.2 g |
| Potato (boiled) | 87 kcal | 1.9 g | 20.1 g | 0.1 g |
| Boiled potato flesh | 87 kcal | 1.9 g | 20.1 g | 0.1 g |
Same food, different preparation
| Preparation | Calories | Protein | Fat |
|---|---|---|---|
| Sweet potato (typical) | 90 kcal | 2 g | 0.2 g |
| Boiled sweet potato (boiled) | 76 kcal | 1.4 g | 0.1 g |
| Canned sweet potato (canned) | 91 kcal | 1.7 g | 0.2 g |
Per 100 g. Water loss in cooking concentrates calories; added fat in frying adds its own.
Nutrition facts for sweet potato
| Nutrient | Per 100 g | Per 1 medium |
|---|---|---|
| Calories | 90 kcal | 117 kcal |
| Protein | 2 g | 3 g |
| Carbohydrate | 20.7 g | 27 g |
| Fat | 0.2 g | 0 g |
| Fiber | 3.3 g | 4 g |
| Sugar | 6.5 g | 8 g |
| Saturated fat | 0.1 g | 0 g |
| Salt | 0.1 g | 0 g |
Print an EU-style nutrition label for sweet potato — per 100 g and per portion.
Vitamins and minerals in sweet potato
Per 100 g, highest share of the Daily Value first. %DV = the adult Daily Value (FDA reference). USDA reference data — not medical advice.
| Nutrient | Per 100 g | %DV |
|---|---|---|
| Vitamin A | 961 µg | 107% |
| Manganese | 0.5 mg | 22% |
| Vitamin C | 19.6 mg | 22% |
| Copper | 0.16 mg | 18% |
| Vitamin B6 | 0.29 mg | 17% |
| Potassium | 475 mg | 10% |
| Thiamin (B1) | 0.11 mg | 9% |
| Niacin (B3) | 1.5 mg | 9% |
See the richest foods per nutrient in the nutrient toplists.
Calories in common sweet potato servings
How many calories in a portion of sweet potato — reference serving estimates with the gram weight shown.
| Serving | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|
| 1 small (60 g) | 54 kcal | 1 g | 12 g | 0 g |
| 100 g (100 g) | 90 kcal | 2 g | 21 g | 0 g |
| 1 medium (114 g) | 103 kcal | 2 g | 24 g | 0 g |
| 1 large (180 g) | 162 kcal | 4 g | 37 g | 0 g |
| 1 cup (200 g) | 180 kcal | 4 g | 41 g | 0 g |
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Frequently asked questions
How many calories are in sweet potato?
Sweet potato has 90 calories per 100 grams. A typical serving of 1 medium (130 g) has about 117 calories.
How much protein is in sweet potato?
Sweet potato contains 2 g of protein per 100 g, or about 3 g per 1 medium.
How much sugar is in sweet potato?
Sweet potato contains 6.5 g of sugar per 100 g. Nutrition values are reference figures; brands and preparation change the real amount, so weigh and log what you actually eat.
How much fiber does sweet potato have?
Sweet potato has 3.3 g of fiber per 100 g. Reference intakes for adults are around 25-30 g of fiber per day, so it contributes meaningfully.
Are these sweet potato calories exact?
No. These are per-100-gram reference values from the USDA FoodData Central SR Legacy source family. Portion size, ripeness, cut and cooking method all change the real number, so treat them as an estimate and log your own portion.
Related foods
Source: USDA FoodData Central SR Legacy #168483 (2018-04 release). US Government work — public domain in the United States. Reference values per 100 g edible portion.
