Purple potato calories come to 161 for one medium potato (173 g) baked with the skin, and 93 per 100 g. Nearly all of that energy is carbohydrate: 88 percent of the calories, with fat at just 1 percent. Size is what really moves the total, from 128 for a small to 278 for a large.
161kcal
1 medium potato · 173 g, purple variety, baked with skin
10%protein
4.3 gProtein
37 gCarbs
0.2 gFat
How to burn off 161 kcal
—Walking, brisk
—Jogging
—Cycling, moderate
—Swimming
Skip the math. BodyPal counts these calories from your steps and workouts automatically.
Nutrition facts
Purple variety, baked with skin · per 173 g
Calories
161 kcal
Protein
4.3 g
Carbohydrate
37 g
Fat
0.2 g
Saturated fat
0.1 g
Cholesterol
0 mg
Sodium
17 mg
Potassium
926 mg
Iron
1.9 mg
Source: USDA FoodData Central
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Verified nutrition data
Numbers on this page come from USDA FoodData Central, the U.S. Department of Agriculture’s food composition database, and from manufacturer labels where a branded product is named. Last verified September 2026. How we verify our data →
Purple potato: calories, protein and sodium by serving
Percent of daily value uses the FDA reference of 2,000 kcal a day.
Serving
kcal
Protein
Carbs
Fat
Sodium
% DV kcal
1 medium (173 g)
161
4.3 g
36.6 g
0.2 g
17 mg
8%
1 small (138 g)
128
3.5 g
29.2 g
0.2 g
14 mg
6%
1 large (299 g)
278
7.5 g
63.2 g
0.4 g
30 mg
14%
100 g
93
2.5 g
21.2 g
0.1 g
10 mg
5%
3 × 1 medium (173 g)
483
13 g
52 mg
5 × 1 medium (173 g)
804
21.6 g
87 mg
A medium purple potato is a 161-calorie side
The default serving here is one medium purple potato, 173 g, baked with the skin on. That comes to 161 calories, or 8 percent of the daily value used on this page. A small one at 138 g lands at 128 calories. A large one at 299 g reaches 278, which is 14 percent of the daily value.
Because there is almost no fat in the potato, the calories track weight in a nearly straight line. That makes it easy to log if you weigh it and easy to misjudge if you eyeball it. Going from a small to a large more than doubles the calories, and store labels for size are loose at best.
Multiples add up quietly. Two medium potatoes make 322 calories, three make 483, and a five-potato tray for a family dinner holds 804 calories with 21.6 g of protein. If you are splitting a batch, weigh the cooked total and your share so the log stays honest.
Carbs supply 88 percent of the calories
Per 100 g, a baked purple potato carries 21.2 g of carbohydrate, 2.5 g of protein and 0.1 g of fat. In calorie terms that is 88 percent carbs, 10 percent protein and 1 percent fat. Saturated fat and cholesterol both read 0.
A medium potato gives 36.6 g of carbs, and only 2 g of that is sugars. It also brings 3.8 g of fiber, a real contribution against the 28 g fiber daily value for a single side dish. The large potato pushes fiber to 6.6 g and carbs to 63.2 g.
Protein is modest. A medium potato has 4.3 g, 9 percent of the daily value, so it is not the part of the plate doing the protein work. Treat it as your starch and build the rest of the meal around that fact.
Potassium is high while sodium barely registers
The USDA row behind these numbers is a baked potato, flesh and skin, with salt. Even so, sodium stays low at 10 mg per 100 g. A medium potato has 17 mg, about 1 percent of the 2300 mg daily value.
Potassium is the row that stands out: 535 mg per 100 g, measured against a 4700 mg daily value. For a food with 0.1 g of fat per 100 g, that is the line on this label most worth noticing. It is a quiet strength that the calorie number alone does not show.
The sodium picture changes fast with what goes on top. Salted butter, cheese or a seasoning blend can easily carry more sodium than the potato itself. If you watch sodium, log the toppings separately so the potato's own 17 mg does not take the blame.
Toppings decide what a baked purple potato really costs
The potato itself is lean: 161 calories and 0.2 g of fat for a medium. What lands on it usually changes the total more than the size does. Butter, sour cream and cheese are mostly fat, so a modest spoonful can rival the potato in calories.
Since the potato brings little protein, pair it with a food that does. Eggs, beans, chicken, fish or plain Greek yogurt as a topping all fill that gap and make the plate more filling. Roasted vegetables or a green salad add volume without adding much on top.
If you roast purple potatoes in oil or fry them, the numbers on this page no longer apply, since they describe a plain baked potato with skin. BodyPal can log the finished dish from a photo, which helps when the plate has several parts.
How does purple potato compare?
Here is how a baked purple potato stacks up against yellow and gold potatoes, per 100 g and per medium serving.
Verdict: On calories it is a tie: purple and yellow both come to 93 per 100 g and 161 per medium, while gold sits at 92 and 159. Pick the color you enjoy, and lean toward purple or yellow if you want a touch more protein at 2.5 g per 100 g against gold's 2.1 g.
Purple potato FAQs
How many calories are in one purple potato?
A medium purple potato (173 g) baked with the skin is about 161 calories. A small one is 128 calories and a large one 278.
Are purple potatoes good for weight loss?
A medium purple potato is 161 calories with 3.8 g of fiber and only 0.2 g of fat, so it stays light as long as it is baked rather than fried.
Purple potato vs regular potato: which has fewer calories?
They are the same: 93 calories per 100 g, so a medium 173 g potato is 161 calories either way.
How many carbs are in a purple potato?
A medium purple potato has about 36.6 g of carbs, including 3.8 g of fiber and 2.0 g of sugars. Per 100 g that is 21.2 g of carbs.
How many calories are in 100 g of purple potato?
A baked purple potato has 93 calories per 100 g. That weight also carries 21.2 g of carbs, 2.5 g of protein, 0.1 g of fat and 2.2 g of fiber.
What are the macros of a purple potato?
By calories, a purple potato is 88 percent carbs, 10 percent protein and 1 percent fat. A medium one (173 g) has 36.6 g of carbs, 4.3 g of protein and 0.2 g of fat.
How much protein is in a purple potato?
A medium purple potato has 4.3 g of protein, 9 percent of the daily value. A small has 3.5 g and a large has 7.5 g, so pair it with a protein food for a balanced plate.
What do the purple potato nutrition facts show beyond calories?
Potassium stands out at 535 mg per 100 g, against a 4700 mg daily value. Sodium is just 10 mg per 100 g, and saturated fat and cholesterol are both 0.
Are these numbers for a baked purple potato?
Yes. The 161 calories for a medium potato are for a purple potato baked with the skin on. Frying or roasting in oil adds fat and calories that these numbers do not include.
