A medium baked potato (about 213 grams) with skin contains roughly 147 calories. That makes it one of the lower-calorie whole foods you can build a meal around, provided you don’t load it with high-calorie toppings.
Calories by Size
Potato size varies quite a bit at the grocery store, so calorie counts shift accordingly. A baked potato with skin contains about 85 calories per 100 grams. Using that baseline, a small baked potato (around 130 grams) comes in near 110 calories, a medium (213 grams) at 147, and a large one (around 300 grams) at roughly 255 calories. The flesh and skin together contribute to these numbers, and leaving the skin on doesn’t meaningfully change the calorie count since the skin is mostly fiber.
What Else Is in That Potato
For a medium baked potato with skin, you’re getting about 34 grams of carbohydrates, 5 grams of fiber, and 4 grams of protein. Fat is negligible, less than a gram. The carbohydrate content is what gives potatoes their reputation as a “starchy” food, but those 5 grams of fiber slow digestion and help you feel full longer. The skin alone is roughly 52% fiber by dry weight, so eating it makes a real difference.
Potatoes are also surprisingly rich in micronutrients. A medium baked potato delivers about 941 milligrams of potassium, which is more than twice what you’d get from a banana. It also provides around 22 milligrams of vitamin C. Potassium is concentrated in the skin, and cooking with the skin on helps preserve vitamin C that would otherwise break down during heating. You’ll also get meaningful amounts of folate, particularly in varieties with colored flesh.
How Baking Compares to Other Cooking Methods
The way you cook a potato changes its calorie density more than most people realize. Per 100 grams, here’s how the main methods compare:
- Boiled with skin: 66 calories
- Boiled, peeled: 77 calories
- Baked with skin: 85 calories
- French fries (restaurant): 280 calories
Baking concentrates calories slightly compared to boiling because moisture evaporates in the oven, leaving you with denser flesh per gram. Boiling does the opposite, letting the potato absorb water. The difference is small in practice. French fries, on the other hand, more than triple the calorie count because the potato absorbs oil during frying. If you’re choosing between baking and boiling for calorie reasons, either works. The real calorie jump comes from frying or from what you put on top.
Why Toppings Change Everything
A plain baked potato is a low-calorie food. The problem is that almost nobody eats one plain. A tablespoon of butter adds about 100 calories. Two tablespoons of sour cream add another 60. A quarter cup of shredded cheddar adds around 110. Pile on bacon bits and you can easily push a 147-calorie potato past 400 or 500 calories.
If you want to keep the calorie count reasonable, Greek yogurt works well as a sour cream substitute at roughly half the calories, with more protein. Salsa, chives, and a small amount of olive oil are other options that add flavor without doubling the total. The potato itself isn’t the problem in a loaded baked potato. The toppings are.
Cooling Changes How Your Body Processes It
One detail worth knowing: a baked potato that’s been cooled after cooking contains more resistant starch than one eaten hot. Resistant starch passes through your small intestine without being fully digested, behaving more like fiber than a typical carbohydrate. Research on commonly consumed potato varieties found that chilled potatoes had the highest resistant starch content, followed by reheated, then hot. This happens because starch molecules reorganize into tighter structures as they cool, a process called retrogradation.
In practical terms, this means a cold baked potato in a salad delivers fewer usable calories and causes a smaller blood sugar spike than the same potato eaten straight from the oven. Even reheating a cooled potato retains some of that resistant starch benefit, so cooking potatoes ahead of time and refrigerating them before reheating is a simple way to shift their nutritional profile slightly in your favor.