Calories in French Fries: By Size and Serving

A medium fast-food french fry order (approximately 117 g) contains around 365 calories, according to USDA FoodData Central (FDC ID 2342155).

French fries are one of the most commonly eaten foods worldwide, yet portion sizes vary enormously across chains and home preparations. Knowing the calorie range by size — and what’s driving those calories — makes it possible to work fries into any eating pattern without guessing.

Calories by Serving Size

The table below uses USDA FoodData Central values for restaurant-style french fries (frozen, oven-baked, or deep-fried in vegetable oil) as the baseline. Chain values (McDonald’s, Burger King, Wendy’s) fall within this range.

Serving	Weight	Calories	Carbs	Fat	Protein
Small	~71 g	~222 kcal	29 g	10 g	3 g
Medium	~117 g	~365 kcal	48 g	17 g	5 g
Large	~154 g	~481 kcal	63 g	22 g	6 g
Extra-large / supersize	~196 g	~612 kcal	80 g	28 g	8 g
Home oven-baked (100 g)	100 g	~163 kcal	26 g	5 g	3 g
Air-fried (100 g)	100 g	~148 kcal	25 g	4 g	3 g

Home-cooked versions, whether oven-baked or air-fried, cut calories roughly in half compared to deep-fried restaurant orders because the oil absorbed during deep frying adds approximately 3–5 g of fat per 100 g of potato.

What Drives the Calories

Fries are a carbohydrate food at their core — a raw potato is about 77 calories per 100 g, nearly all from starch. Deep frying triples the calorie density because the exterior absorbs oil and the water evaporates. The result is a food that is simultaneously high-carb and high-fat, which is why the calorie count climbs fast as portions scale up.

Macro split for a medium deep-fried order (365 kcal):

• Fat contributes roughly 153 kcal (42%)
• Carbohydrate contributes roughly 192 kcal (53%)
• Protein contributes roughly 20 kcal (5%)

This split is worth understanding because fat and carbohydrate together means fries digest quickly, raise blood glucose meaningfully, and do not produce much satiety per calorie compared with protein-rich foods. See how to calculate your macros for a practical framework on balancing macros across the day.

Does It Fit Your Goals?

Weight loss. A small order at around 222 calories can fit a calorie deficit day without blowing the budget, provided the rest of the plate is lean protein and vegetables. The problem for most people is that fries rarely arrive alone — a burger-and-large-fries combo can exceed 900 calories in one sitting. Tracking each component separately is the most accurate approach.

Blood sugar management. Fries have a moderately high glycemic index (around 70–75 for deep-fried potato), and a medium serving delivers 48 g of carbs. That combination produces a significant glycemic load. Pairing fries with a protein source slows gastric emptying and blunts the glucose spike. Check the glycemic load calculator to see how a serving fits your carb budget. People managing prediabetes or type 2 diabetes will generally want to stick to a small portion or switch to an air-fried version at home.

Muscle gain / higher calorie targets. Fries are calorie-dense and easy to eat, making them useful when total energy intake is hard to hit. The low protein fraction means they should accompany — not replace — a protein-rich main.

The Fastest Way to Log Fries

Whether it’s a small bag or a heaped restaurant serving, photographing the portion before you eat is the most accurate way to capture the actual calorie count — snap the plate with CalEye and the macros are logged in seconds.