Sweet Potato Macros: Carbs, Protein, Fiber, and Fat Explained
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A medium baked sweet potato with the skin on, about 130 grams, lands close to 103 calories, 24 grams of carbohydrate, 4 grams of fiber, 2 grams of protein, and almost no fat. That is the short answer on sweet potato macros: it is a carb-forward vegetable with meaningful fiber, a small amount of protein, and a fat number so low it rounds to zero unless you add butter or oil.
The Macro Breakdown, Serving by Serving
Macros scale with weight, not with how impressive the potato looks in your hand. Sweet potatoes vary a lot in size, so the same "one sweet potato" can swing from 90 calories to well over 200. Weighing is the only way to be precise, but these reference points cover most real-world portions.
| Serving | Calories | Carbs | Fiber | Protein | Fat |
|---|---|---|---|---|---|
| 100g raw, with skin | 86 | 20g | 3g | 1.6g | 0.1g |
| 100g baked, with skin | 90 | 21g | 3.3g | 2g | 0.2g |
| 100g boiled, no skin | 76 | 18g | 2.5g | 1.4g | 0.1g |
| Small baked (about 90g) | 81 | 19g | 3g | 1.8g | 0.2g |
| Medium baked (about 130g) | 103 | 24g | 4g | 2.3g | 0.2g |
| Large baked (about 180g) | 162 | 37g | 6g | 3.6g | 0.3g |
Numbers are rounded and vary by variety and growing conditions. For a fuller picture of the vegetable itself, our complete sweet potato guide covers types, nutrition, and prep in one place.
Why Carbs Dominate the Profile
Roughly 90 percent of the calories in a plain sweet potato come from carbohydrate. Most of that is starch, with a modest amount of naturally occurring sugar that becomes more noticeable when the potato is cooked slowly and the starches convert. That is why a long-roasted sweet potato tastes sweeter than a boiled one even though the macros barely move.
The useful nuance for anyone tracking is fiber. Around 15 to 17 percent of the total carbohydrate in a skin-on sweet potato is fiber, which is high for a starchy vegetable. If you count net carbs, subtracting fiber takes a medium baked sweet potato from 24 grams to about 20. We go deeper on that in our post on how much fiber is in a sweet potato.
Protein and Fat: Small but Not Zero
Two to three grams of protein per medium potato will not anchor a meal, but it is not nothing either, especially compared to most other side starches. Sweet potato protein is complete enough to contribute to a day's total, though it is best treated as a bonus rather than a source. Our breakdown of sweet potato protein has the amino acid details.
Fat is where prep does the most damage to your tracking. A plain sweet potato has essentially none. Two tablespoons of oil for roasting adds around 240 calories and 28 grams of fat to the pan, and deep frying can double or triple the calorie count of the same weight of potato. If your macro log looks off, the cooking fat is usually why.
How Prep Changes the Numbers
Cooking method does not create or destroy macros, but it changes water content, which changes macros per gram. Baking drives off moisture, so baked sweet potato is slightly more calorie dense by weight than boiled. Boiling keeps water in and can leach a little of the water-soluble nutrients out. Mashing with butter, milk, or brown sugar rewrites the profile entirely.
Drying concentrates the same effect further. When water leaves, everything else stays, so a dried sweet potato snack packs more carbs, fiber, and protein into a smaller bite than the fresh version by weight. That is not a nutritional upgrade or a downgrade, it is just density, and it is worth knowing when you portion.
Fitting Sweet Potato Macros Into Your Day
Sweet potatoes tend to work well as a carbohydrate slot: pre-workout, post-workout, or alongside a protein source at dinner. Leaving the skin on adds fiber for almost no extra calories. Pairing with protein and a little fat generally makes the meal more satisfying than the potato alone.
If you are managing blood sugar, cutting weight, or building a macro target around a specific goal, talk to your doctor or a registered dietitian before making changes based on a chart.
Frequently Asked Questions
How many carbs are in a medium sweet potato?
About 24 grams of total carbohydrate in a 130 gram baked sweet potato with the skin on. Subtract the roughly 4 grams of fiber and you get about 20 grams of net carbs.
Are sweet potato macros better than white potato macros?
They are close. Sweet potatoes usually carry a bit more fiber and more vitamin A, while white potatoes tend to run slightly higher in potassium and protein per gram. Neither is a clear winner on macros alone. Our comparison of sweet potato vs. regular potato lays it out side by side.
Does the skin change the macro count?
Mostly through fiber. Eating the skin adds roughly a gram of fiber to a medium potato with a negligible calorie difference. Peeling it costs you fiber and some micronutrients.
How much protein and fat should I expect?
Two to three grams of protein and under half a gram of fat for a medium plain sweet potato. Any meaningful fat in your total is coming from what you cooked it in or topped it with.
Do dried sweet potato snacks have the same macros?
Per gram, no. Drying removes water and concentrates the carbs, fiber, and protein, so a small dried portion matches a much larger fresh portion. Always read the per-serving panel rather than assuming.
A Snack With Macros You Can Actually Read
If you like knowing what is in your food, sweet potato is an easy ingredient to track, and it gets easier when there is nothing else hiding in the bag. Yammy makes chewy dried sweet potato sticks from real sweet potato, never deep-fried, with 4 grams of fiber and 3 grams of protein per serving. They are naturally vegan and gluten-free, and the texture lands somewhere close to a fruit leather, dense and chewy rather than crunchy.
The Original, Salt & Pepper, and Sriracha flavors have no added sugar, so the sweetness is whatever the potato brought with it. It is a straightforward carb-and-fiber snack that fits a tracked day without turning into a math problem.