A typical serving of sweet potato (1 medium, 114 g) has about 103 calories. Per 100 g: 90 kcal, 2 g protein, 20.7 g carbs, 0.2 g fat. The same 100 g carries 3.3 g of fiber and 6.5 g of sugar. Most of the energy comes from carbohydrate.
| Serving | Weight | Calories |
|---|---|---|
| 1 medium | 114 g | 103 kcal |
| 1 large | 180 g | 162 kcal |
| 1 cup, mashed | 200 g | 180 kcal |
| 100 g | 100 g | 90 kcal |
Baking concentrates the sugars; a medium sweet potato lands near 103 calories. On the energy-density scale, 90 kcal per 100 g puts sweet potato at the low end. Fiber is the standout at 3.3 g per 100 g, which slows a portion down more than the calorie count suggests.
A typical serving (1 medium, 114 g) has about 103 calories, and 100 g has 90 kcal. Calories scale with weight, so double the portion means double the number.
There are 2 g of protein in 100 g of sweet potato, which works out to about 2.3 g per serving (1 medium). Treat it as an energy source rather than a protein source.
There are 20.7 g of carbohydrate per 100 g of sweet potato, or about 24 g in 1 medium (114 g).
Every value on this page comes from USDA FoodData Central, entry 168483 (SR Legacy). Serving figures are converted from the per-100-g data, so rounding can shift a total by a calorie or two.
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Get JoulesA note on accuracy: calculators like this one provide estimates based on population-level formulas — your real needs vary with genetics, muscle mass, medical conditions, and more. Results are for information only and are not medical advice, a diagnosis, or a prescription. Talk to a doctor or registered dietitian before making significant changes to your diet or exercise, especially if you have a health condition, are pregnant, or are under 18.
Nutrition data: USDA FoodData Central, FDC ID 168483 (SR Legacy). Serving calories are computed from the per-100-g values.
