Sweet Potato vs Potato

Sweet potatoes have a health-food reputation, while regular potatoes are often unfairly cast as less healthy. In reality both are nutritious, filling whole foods. They differ mainly in their vitamins and their effect on blood sugar, rather than in calories.

Nutrition per 100 g. Highlighted cell is the higher (or, for calories, sugar and fat, the lower) of the two.

Per 100 g Sweet potato White potato
Calories 86 kcal 77 kcal
Protein 1.6 g 2 g
Carbs 20 g 17 g
Fat 0.1 g 0.1 g
Fiber 3 g 2.2 g
Sugar 4.2 g 1.2 g
Omega-3 0.01 g 0.01 g
Iron 0.6 mg 0.8 mg
Calcium 30 mg 12 mg
Potassium 337 mg 421 mg
Magnesium 25 mg 23 mg
Vitamin C 2.4 mg 20 mg
Zinc 0.3 mg 0.3 mg
Vitamin B12 0 mcg 0 mcg

The verdict

The two are closer than most people think. Sweet potatoes are rich in vitamin A (beta-carotene) and have a slightly gentler effect on blood sugar, while white potatoes are higher in potassium and a little higher in some minerals. Calories are similar. Both are healthy; the best choice depends on the nutrients you want and your taste.

Sweet potato

Choose sweet potato for vitamin A, a touch more fiber, and a gentler blood sugar response.

White potato

Choose white potato for more potassium, a neutral flavour, and a filling, budget-friendly staple.

Frequently asked questions

Frequently asked questions

Is sweet potato healthier than white potato?

Both are healthy whole foods. Sweet potato is richer in vitamin A and has a slightly lower glycaemic impact, while white potato is higher in potassium. Neither is clearly superior; they offer different nutrients.

Which has fewer calories?

They are similar, with both providing roughly 75 to 90 calories per 100 g when cooked plainly. The bigger difference is in their vitamins rather than their calorie content.

Which is better for weight loss?

Both work well for weight loss as filling, nutrient-rich carbs. Sweet potato has a slight edge for blood sugar, but how you cook them matters far more; baked or boiled beats fried for either one.

Is sweet potato good for blood sugar?

Sweet potato has a slightly lower glycaemic index than white potato, meaning a gentler effect on blood sugar, especially when boiled rather than baked. Pairing either with protein and fiber further steadies the response.

Nutrition values are per 100 g from typical USDA data and vary with variety, cut and preparation. This is general information, not dietary advice.