How Much Protein Is in a Sweet Potato? (And How to Get More)
Share
If you're wondering about sweet potato protein, here's the quick answer: a medium sweet potato (about 130g) has roughly 2 to 2.5 grams of protein, which works out to around 1.6 grams per 100g. Sweet potatoes aren't a high-protein food, but they're a nutritious, fiber-rich carb that pairs beautifully with protein sources to round out a meal or snack.
How Much Protein in a Sweet Potato? (Exact Numbers)
Protein content varies a little with size and how the sweet potato is prepared, but here are typical values for a plain, baked sweet potato with the skin:
| Serving | Approx. Weight | Protein |
|---|---|---|
| Per 100g | 100g | ~1.6g |
| Medium sweet potato | ~130g | ~2.0-2.5g |
| Large sweet potato | ~180g | ~2.9g |
| 1 cup, mashed | ~200-250g | ~3.2-4.0g |
So when people ask "how much protein in a sweet potato," the honest answer is: a useful little bit, but not enough to count as a primary protein source on its own.
Is Sweet Potato High in Protein?
No, sweet potatoes are not high in protein. At roughly 1.6g per 100g, protein makes up only a small share of their calories. They shine instead as a source of complex carbohydrates, fiber, potassium, and vitamin A (from beta-carotene). If you're choosing a sweet potato, think of it as a quality carb and fiber food first, with a modest protein bonus.
Sweet Potato vs. White Potato and Other Vegetables
Sweet potato protein is roughly in line with many starchy and non-starchy vegetables:
- White potato: slightly higher, at about 2g per 100g.
- Sweet potato: about 1.6g per 100g.
- Broccoli: around 2.5-2.8g per 100g.
- Green peas: notably higher, near 5g per 100g.
- Spinach: about 2.9g per 100g.
The takeaway: sweet potatoes are a respectable veggie protein contributor, but peas, beans, and lentils carry far more if protein is your goal.
Is Sweet Potato a Complete Protein?
On its own, a sweet potato is not typically classed as a complete protein source the way you'd rely on for daily needs. That said, sweet potatoes do contain all nine essential amino acids in small amounts, so the protein they provide is reasonably balanced for a plant food. The limiting factor is simply quantity, not quality. To meet protein targets, pair sweet potato with richer protein foods rather than leaning on it alone.
How to Get More Protein With Your Sweet Potato
The easiest way to boost the protein in a sweet potato meal is to pair it with a protein-dense food. Some simple, balanced combinations:
- Black beans or chickpeas: add 7-8g protein per half cup and keep it fully plant-based.
- Eggs: a baked sweet potato topped with a fried or poached egg adds about 6g.
- Greek yogurt: a savory dollop adds protein and creaminess (around 5-6g per 100g).
- Nut butter: a tablespoon of peanut or almond butter on sweet potato toast adds 3-4g plus healthy fats.
- Lentils or quinoa: spoon over a baked half for a hearty, higher-protein bowl.
For more ways to cook, prep, and store them, see our complete guide to sweet potatoes.
High-Protein Sweet Potato Snack Ideas
- Sweet potato toast + nut butter: slice, toast, and top with almond butter and banana.
- Loaded mini sweet potatoes: halve, bake, and fill with Greek yogurt and chives.
- Sweet potato + hummus: roast wedges and dip into hummus for fiber and plant protein.
- Trail-style mix: pair chewy dried sweet potato sticks with a handful of nuts for a satisfying on-the-go snack.
Frequently Asked Questions
How much protein is in a sweet potato per 100g?
A plain sweet potato has about 1.6g of protein per 100g. A medium one (around 130g) gives you roughly 2 to 2.5g.
Is sweet potato good for building muscle?
Sweet potatoes support active lifestyles mainly as a carb that helps refuel energy, but they're low in protein. For muscle goals, pair them with a dedicated protein source like eggs, Greek yogurt, beans, or lean meat.
Does cooking change the protein in a sweet potato?
Cooking method has little effect on protein content. Baking, boiling, or roasting keeps protein roughly the same; the main differences are in moisture and texture, not grams of protein.
A Tasty Way to Snack on Sweet Potato
Want the flavor and fiber of sweet potato in a grab-and-go form? Yammy's chewy dried sweet potato sticks deliver 3g of protein and 4g of fiber per serving, and they're naturally vegan and gluten-free. They make an easy base for the high-protein pairings above, or a satisfying snack just as they are.