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How many calories in a 173 g potato? Unpacking the Nutritional Facts

4 min read

According to USDA data, a medium-sized baked russet potato (173g) contains approximately 164 calories. This figure is a baseline, as the preparation method significantly influences the final calorie count. Understanding how many calories in a 173 g potato is just the first step in appreciating its nutritional value.

Quick Summary

A medium-sized 173g potato provides around 164 calories when baked, primarily from carbohydrates. The total calorie count is heavily influenced by cooking method, with frying adding significant fat and calories. Baked or boiled methods are the healthiest options, preserving valuable nutrients like potassium and vitamin C while keeping calories low.

Key Points

  • 164 Calories: A medium (173g) baked russet potato contains approximately 164 calories.

  • Preparation is Key: The final calorie count is heavily dependent on the cooking method, with baking or boiling being the healthiest options.

  • Fat and Toppings Add Calories: Frying potatoes or adding high-fat toppings like butter, cream, and cheese will significantly increase the total calories.

  • Rich in Nutrients: Potatoes are a good source of potassium, Vitamin C, and Vitamin B6, especially when eaten with the skin on.

  • High in Fiber: Consuming the skin boosts dietary fiber intake, aiding digestion and promoting fullness.

  • Satiating Food: Potatoes can help with weight management by promoting a feeling of fullness and reducing overall calorie intake.

  • Resistant Starch Benefits: Cooling a potato after cooking can increase its resistant starch content, which benefits gut health and blood sugar control.

In This Article

The Core Calorie Count of a 173g Potato

At its simplest, a medium 173-gram (approximately 6-ounce) potato is a naturally low-calorie food. A baked russet potato of this size, prepared without any toppings, contains about 164 calories. For most people, this is a relatively modest energy contribution to a meal, especially when compared to processed carbohydrates or snacks. The majority of these calories come from the potato's carbohydrate content, which is primarily in the form of starch. The macronutrient breakdown for a baked 173g potato is typically around 37 grams of carbohydrates, 4.6 grams of protein, and only 0.2 grams of fat.

The Impact of Cooking Method on Calories

The way a potato is cooked is the most significant factor affecting its final caloric content. A raw potato has a certain base level of nutrients, but the cooking process alters its composition and, more importantly, what is added to it. While boiling, steaming, or baking adds no additional fat, frying can dramatically increase the calorie count. For example, a 170g portion of boiled or baked potatoes contains around 123 calories, whereas the same weight of chip-shop chips can have as many as 450 calories, mainly due to the oil absorbed during frying.

  • Boiling: Retains some nutrients, but water-soluble vitamins like Vitamin C can leach out. It adds no fat, keeping the calorie count low.
  • Baking: Considered one of the healthiest methods, as it retains nutrients and requires no added oil. Eating the skin increases fiber intake.
  • Frying: Involves cooking in oil, which a potato absorbs readily. This significantly increases both the fat and calorie content, making it a much less healthy option.
  • Mashing: The calorie count depends on what is added. Mashing with just a little milk keeps it healthy, but adding butter, cream, and cheese will increase calories substantially.

Nutritional Benefits Beyond Calories

Despite its simple carb reputation, a potato is a powerhouse of essential vitamins and minerals. These benefits are most pronounced when the potato is consumed with its skin, as many nutrients are concentrated there.

Key Nutrients in a Potato:

  • Potassium: A medium-sized potato provides a significant amount of potassium, an essential mineral for blood pressure regulation and heart health.
  • Vitamin C: Potatoes are a good source of Vitamin C, which is vital for immune function, collagen production, and antioxidant protection.
  • Vitamin B6: Important for red blood cell formation and nervous system function, this B vitamin is also present in good quantities.
  • Fiber: Especially with the skin on, potatoes contain dietary fiber which is important for digestive health and helps promote feelings of fullness.
  • Antioxidants: Colorful varieties like red and purple potatoes contain high levels of antioxidants, which combat free radicals and may reduce disease risk.

Comparing Potato Cooking Methods and Toppings

To better understand the calorie implications, here is a comparison table outlining different cooking methods and toppings for a 173g potato.

Preparation Method Added Ingredients Approx. Calorie Count Nutritional Impact
Baked (plain) None 164 Excellent source of potassium and Vitamin C, low fat.
Boiled (plain) None ~123 Retains most nutrients, slightly fewer calories due to moisture content.
Mashed 1 tbsp butter, splash milk ~230 Added fat and calories from butter.
Roasted 1 tbsp olive oil ~250 Healthy fat from olive oil, beneficial for nutrient absorption.
French Fries Deep-fried in oil 450+ Significantly higher in fat and calories, less healthy.

The Role of Potatoes in a Healthy Diet

Potatoes often receive a bad reputation, frequently being associated with unhealthy dishes like french fries or high-fat toppings. However, this is a misconception that overlooks the potato's inherent nutritional value. As a whole food, a potato is fat-free, cholesterol-free, and a quality carbohydrate source that provides sustained energy. They are also highly satiating, meaning they help you feel full and can assist with weight management by reducing overall calorie intake. For those monitoring blood sugar, cooking and then cooling potatoes can increase their resistant starch content, which has a positive effect on blood sugar control. The key is mindful preparation, focusing on methods that don't introduce excessive fat or sodium, and choosing healthy toppings like salsa, low-fat cottage cheese, or herbs instead of high-fat options like butter and sour cream. Incorporating potatoes prepared healthily can provide essential nutrients and energy as part of a balanced diet.

In conclusion, the calorie count of a 173g potato is quite reasonable, sitting at approximately 164 calories for a baked russet variety. The most critical takeaway is that the preparation and what you add to the potato are the main drivers of its final nutritional profile. Opting for methods like baking, boiling, or roasting and keeping toppings modest allows you to enjoy this versatile and nutrient-dense vegetable without a guilt trip. So go ahead and enjoy your potatoes, just prepare them smartly. A great source for further information on potato nutrition can be found at the Harvard T.H. Chan School of Public Health website.

The Verdict: How to Enjoy a Healthy Potato

To make the most of your potato, focus on mindful cooking. Avoid deep frying and heavy, calorie-dense toppings. Instead, embrace simple preparations that highlight the potato's natural flavor and nutritional benefits. Bake it with a little olive oil and fresh rosemary, or boil and mash it with a sprinkle of herbs and a splash of milk. Eating the skin is also a great practice to maximize your intake of fiber and micronutrients. By making these simple choices, you can ensure that your potato remains a healthy and satisfying part of your diet.


Frequently Asked Questions

Boiling a potato does not add calories, but the overall water content changes its density. A boiled potato (170g) typically has slightly fewer calories, around 123, compared to a 173g baked potato (164) because it absorbs water during cooking.

Based on nutritional information that places a raw potato at about 77 calories per 100g, a 173g raw potato would contain approximately 133 calories. However, potatoes are not typically consumed raw.

Yes, a baked potato with its skin is a good source of dietary fiber. Much of the fiber is concentrated in the skin, which is why it's recommended to eat it.

Yes, the calorie count can vary by potato type. For example, red potatoes generally have slightly fewer calories and carbohydrates than russet potatoes.

The healthiest ways to prepare a potato are baking, boiling, or steaming, as these methods add no extra fat. It is best to cook it with the skin on to preserve nutrients.

No, salt is a mineral and contains zero calories. While too much sodium is unhealthy, it does not directly add to the potato's calorie count.

Cooking and then cooling potatoes can increase their resistant starch content, which helps lower their glycemic index. Reheating the cooled potatoes does not negate this effect.

References

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Medical Disclaimer

This content is for informational purposes only and should not replace professional medical advice.