Plain boiled potatoes contain approximately 87 calories per 100 grams. A 200-gram serving therefore has about 174 calories. That estimate is for potato cooked in its skin and eaten without the skin, with no added fat. A plain baked potato eaten with its skin provides approximately 93 calories per 100 grams.
The potato itself is only part of the calculation. Oil, butter, cheese and sauces can change the total considerably. The other detail that makes a difference is whether you weigh the potato before or after cooking.
Calories in boiled potatoes by portion
The following estimates use the USDA reference for potatoes boiled in their skins, flesh only, without added salt or fat. Weights refer to the edible cooked portion.
| Boiled potato, cooked weight | Approximate calories |
|---|---|
| 100 g | 87 kcal |
| 150 g | 131 kcal |
| 200 g | 174 kcal |
| 250 g | 218 kcal |
| 300 g | 261 kcal |
A potato’s size is a convenient guide, but not a precise measurement. Two potatoes that look medium-sized can weigh quite different amounts. If you want a closer estimate, weigh the part you actually eat and use an entry that matches how it was prepared.
Potato nutrition facts per 100 grams
For the same plain boiled potato reference, the approximate nutritional values are:
| Nutrient | Per 100 g cooked flesh |
|---|---|
| Calories | 87 kcal |
| Carbohydrates | 20.1 g |
| Protein | 1.9 g |
| Fat | 0.1 g |
| Fiber | 1.8 g |
Potatoes also provide potassium and other nutrients. The amounts vary with the variety, whether the skin is eaten and how the potatoes are cooked. They are mainly a source of carbohydrate, so you might pair them with a protein source and vegetables to make a more varied meal.
Raw, boiled and baked potatoes: why the calories differ
USDA reference entries give approximately 77 calories per 100 g for raw potato with flesh and skin, 87 calories for boiled potato flesh and 93 calories for baked potato with flesh and skin. These figures describe different samples and preparations; they are not exact conversion factors for the same potato.
Cooking changes water content. A baked potato may lose water, making its calories more concentrated per 100 grams. That does not mean heat creates extra calories in the potato. If you eat the whole potato without added ingredients, its total calories remain approximately those of the edible raw potato, although some nutrients can be lost during preparation.
For tracking, use a raw entry with raw weight or a cooked entry with cooked weight. Don’t weigh a potato raw and then multiply that weight by the baked-potato figure. For more on matching a food’s weight to its database entry, see How Many Calories in Cooked Rice?
How cooking and toppings change the total
Boiled or steamed potatoes
Cooking potatoes in water or steam does not require adding oil. If you add butter, olive oil or a sauce afterwards, count that separately. For example, 200 g of the boiled reference potato provides about 174 calories; one teaspoon of oil adds roughly 40 calories if that full amount is eaten, bringing the estimate to about 214.
Baked and roasted potatoes
A plain 200 g baked potato, weighed after cooking and eaten with the skin, provides approximately 186 calories using the USDA reference. Additions such as butter, cheese or sour cream increase the total. A roasted tray can be harder to estimate because the potatoes may lose water and the oil may not be distributed evenly; some can also remain in the pan.
Mashed potatoes and fries
Mashed potatoes vary according to how much milk, butter, cream or other ingredients are used. For a homemade batch, add the calories of the ingredients and divide the total among the portions. Fries vary with the product, portion and amount of oil absorbed. Check the package or restaurant information when available, rather than using the plain boiled-potato figure for the finished dish.
Can you eat potatoes while losing weight?
Yes. Potatoes can fit into both a weight-loss and a weight-maintenance eating pattern. A food does not determine the outcome on its own: the amounts you eat, the rest of your meals and the habits you can sustain over time all matter.
Imagine you enjoy potatoes with dinner. You could start with a portion that suits your appetite, add a food you enjoy for protein and some vegetables, and notice how satisfied you feel afterwards. If you like oil or butter, you can include it and account for the amount rather than treating the meal as a failure.
Tracking is a way to gather useful information, not a test of your worth or willpower. An imperfect estimate is part of normal life; a consistent, flexible routine is more useful than trying to make every meal exact.
How to track potato calories with CaloPop
CaloPop – Free Calorie Tracker can support you in tracking the calories you eat. Start with the weight and preparation that best match your potato, then account for the toppings or cooking fat you actually eat. If you are eating out and don’t know the recipe, a reasonable estimate is more useful than pretending to know the exact number.
Frequently asked questions
How many calories are in 100 g of boiled potatoes?
About 87 calories for the USDA reference potato boiled in its skin, with only the flesh eaten and no fat added. Different potatoes and preparation methods can vary.
How many calories are in 200 g of potatoes?
Approximately 174 calories if the portion is plain boiled potato flesh using the reference above. Two hundred grams of plain baked potato with skin provides approximately 186 calories. Count toppings separately.
How many calories are in one potato?
It depends on its size, edible weight and preparation. A portion weighing 150 g after boiling has roughly 131 calories, while 250 g has about 218 calories. These figures describe portions by weight, not standard potato sizes.
Are potatoes fattening?
Potatoes do not automatically cause weight gain. Their contribution to your overall energy intake depends on the portion and preparation, including any added oil or toppings. They can be part of an eating pattern that supports weight loss or maintenance.
Should I weigh potatoes raw or cooked?
Either method can work. Match the entry to the weight you measured: raw potato for raw weight, or the appropriate cooked entry for the portion after cooking. Weigh the edible portion and count additions separately.
Nutrition data sources
Portion estimates and nutrition figures are based on USDA FoodData Central SR Legacy entries: boiled potato, cooked in skin, flesh only, without salt (FDC 170438); baked potato, flesh and skin, without salt (FDC 170093); and raw potato, flesh and skin (FDC 170026). Values are estimates and vary with variety, moisture and preparation.
Build habits that last beyond a single meal
Knowing the calories in a potato can help with a practical decision. If you would also like to work on the thoughts and habits that influence those decisions, explore my Udemy course, Weight Loss Without Emotional Eating.
I’m Costin Liculescu of Mindset Over Menu, and I offer one-to-one coaching for weight loss, emotional eating and weight maintenance. You can contact me at +40 752 578 044.
For a broader look at following through when things feel uncomfortable, my book How to Do Hard Things: The Discomfort Trap explores ways of approaching discomfort and pursuing meaningful goals. Find it on Amazon, or listen on Spotify or ElevenReader.