Carbs in McDonald's Medium Fries

How many carbs are in mcdonald's medium fries?

McDonald's Medium Fries has 34.2g net carbs per 100g — 37.8g total carbs minus 3.6g fiber — plus 3.6g protein, 13.5g fat, and 288 calories. 1 medium fries (111g) works out to about 38g net carbs and 320 calories. That makes mcdonald's medium fries high in net carbs and about average for the typical fast-food item, which averages about 28.0g net carbs per 100g. At this carb count, mcdonald's medium fries is best limited to small portions on keto (usually 20–50g net carbs per day). Values are per per 100 g, sourced from Manufacturer-reported values; net carbs are computed by CarbMeNot.

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Last updated June 10, 2026 · Reviewed by Jordan Lee, Nutrition Editor

McDonald's Medium Fries
34.2g
Net carbs
37.8g
Total carbs
3.6g
Fiber
3.6g
Protein
13.5g
Fat
288
Calories

Values per 100 g.

Carbs by serving size

ServingNet carbsTotal carbsCalories
1 medium fries38g42g320
100 g (3.5 oz)34.2g37.8g288
1 oz (28 g)9.6g10.6g81

How many calories are in mcdonald's medium fries?

McDonald's Medium Fries has 288 calories per 100g. 1 medium fries (111g) has about 320 calories. That's alongside 3.6g protein, 13.5g fat, and 34.2g net carbs per 100g.

Nutrition facts

NutrientAmount (per 100 g)
Calories288
Total carbs37.8g
Net carbs34.2g
Fiber3.6g
Sugar0.3g
Sugar alcohols0g
Protein3.6g
Fat13.5g
Sodium234mg
Potassium504mg

Source: Manufacturer-reported values (fast-food). Net carbs = total carbs − fiber − sugar alcohols, computed by CarbMeNot.

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Frequently asked questions

How many carbs are in mcdonald's medium fries?
McDonald's Medium Fries has 37.8g of total carbs and 34.2g of net carbs per 100 grams.
How many net carbs are in mcdonald's medium fries?
McDonald's Medium Fries has 34.2g of net carbs per 100 grams (total carbs 37.8g minus 3.6g fiber).
Is mcdonald's medium fries keto-friendly?
McDonald's Medium Fries has 34.2g net carbs per 100g, which is high for keto. Enjoy it in small portions or save it for higher-carb days.
How many calories are in mcdonald's medium fries?
McDonald's Medium Fries has 288 calories per 100 grams.
How many carbs are in 1 medium fries?
1 medium fries (111g) has about 38g net carbs, 42g total carbs, and 320 calories.

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