A typical serving of french fries (1 serving small, 71 g) has about 222 calories. Per 100 g: 312 kcal, 3.4 g protein, 41.4 g carbs, 14.7 g fat. The same 100 g carries 3.8 g of fiber and 0.3 g of sugar. The energy comes from a mix of carbs, fat, and protein.
| Serving | Weight | Calories |
|---|---|---|
| 1 serving small | 71 g | 222 kcal |
| 1 serving medium | 117 g | 365 kcal |
| 1 serving large | 154 g | 480 kcal |
| 100 g | 100 g | 312 kcal |
A medium serving of fries is about 365 calories, quadruple the potato they started as. On the energy-density scale, 312 kcal per 100 g puts french fries at the high end. Fiber is the standout at 3.8 g per 100 g, which slows a portion down more than the calorie count suggests.

A typical serving (1 serving small, 71 g) has about 222 calories, and 100 g has 312 kcal. Calories scale with weight, so double the portion means double the number.
There are 3.4 g of protein in 100 g of french fries, which works out to about 2.4 g per serving (1 serving small). Treat it as an energy source rather than a protein source.
There are 41.4 g of carbohydrate per 100 g of french fries, or about 29 g in 1 serving small (71 g).
Every value on this page comes from USDA FoodData Central, entry 170698 (SR Legacy). Serving figures are converted from the per-100-g data, so rounding can shift a total by a calorie or two.
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Nutrition data: USDA FoodData Central, FDC ID 170698 (SR Legacy). Serving calories are computed from the per-100-g values.