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McDonald's Fries: French Fry Sizes, Calories, Price and Gluten

Updated 3 September 2026 110 to 480 calories · four sizes Verified by our pricing team

A medium is 320 calories and a large 480. McDonald's fries are not gluten free in the United States, and the reason is an ingredient rather than cross-contamination.

Table of Contents

McDonald's fries come in four sizes: kids at 110 calories, small at 230, medium at 320 and large at 480. A medium costs around $3.79. They are not gluten free, not vegan and not vegetarian in the United States.

Two things about McDonald's French fries surprise almost everyone. The first is that American McDonald's fries contain wheat and milk as ingredients, which rules them out for coeliacs and vegans alike. The second is that despite their reputation, they carry less sodium than the fries at most competing chains. This page covers every McDonald's fries size with its full nutrition, the gluten question in detail, how the fries are actually made, and whether ordering them without salt works. The full board is on our McDonald's menu with prices, and every item's figures are on the McDonald's calorie list.

Medium320
Large480
Gluten free?No
Medium price$3.79
mcdonald's fries

McDonald's French fries: sizes, prices and calories

McDonald's French fries come in four sizes on the US menu. The jump from small to large more than doubles the calories while adding a little over a dollar, which makes it the least efficient upgrade on the board if you are counting.

SIZEPRICECALORIESWEIGHT

Kids Fries

The Happy Meal portion
$1.89110~40g

Small Fries

Lowest sodium side on the menu
$2.7923071g

Medium Fries

Standard in most meals. The most ordered size
$3.79320117g

Large Fries

Worst calorie-per-dollar step
$3.99480154g

Lowest recorded, medium

Value-menu restaurants
$3.19320117g

Highest recorded, medium

Airport and highway
$3.99320117g
Medium fries to large adds 160 calories for about twenty cents. Small to medium adds 90 for a dollar. On a calories-per-dollar basis the large is by far the worst step, and it is the one restaurants push hardest at the counter. The kids size at 110 can be ordered on its own at most restaurants without buying a Happy Meal.

Free McDonald's fries promotions

McDonald's has run free medium fries with a minimum app purchase on Fridays, on and off, for several years. Offers change and are region-specific, so check the deals section of the app rather than assuming. Current offers are on our McDonald's meal deals page.

Are McDonald's fries gluten free?

McDonald's fries are not gluten free in the United States. This is the part most people get wrong: it is not a cross-contamination issue that careful ordering can work around. Wheat is present as an ingredient.

WHEREWHEAT?MILK?GLUTEN FREE?

United States

Natural beef flavour in the oil
YesYesNo

United Kingdom

No beef flavouring added
NoNoCertified GF

Much of Europe

Different formulation entirely
NoNoOften certified

US hash browns

Same oil, same problem
YesYesNo

Vegan or vegetarian?

US only. The milk rules both out
——Neither
The natural beef flavour lists hydrolyzed wheat and hydrolyzed milk as starting ingredients. McDonald's fried US fries in beef tallow until 1990. When it switched to vegetable oil it added a beef-derived flavouring to keep the taste, and that flavouring is built on wheat and milk. A class action over the issue settled for $10 million in 2002 after vegetarian customers found out.
If you have coeliac disease, McDonald's fries are not a safe option in the US. No modification changes this, because the wheat is in the oil rather than on the surface. McDonald's does not operate a gluten-free kitchen and makes no gluten-free claim for any US item. Always confirm on McDonald's own allergen tool before ordering, and see our McDonald's allergen menu for the full picture.

Why UK McDonald's fries are different

British and European restaurants never added the beef flavouring, so their fries are potato, oil and salt. Several markets certify them gluten free. If you have eaten McDonald's fries safely abroad and assumed the American ones matched, they do not. Formulations by market are on our McDonald's international menu page.

McDonald's fries calories: medium fries and every other size

Medium fries are 320 calories with 15g of fat, 43g of carbohydrate and 260mg of sodium. Carbohydrate is the dominant macro at roughly half the calories, which is what you would expect from a fried potato.

NUTRIENTSMALLMEDIUMLARGE

Calories

230320480

Total fat

11g15g23g

Carbohydrate

Around half the calories
31g43g63g

Protein

3g5g7g

Sodium

Lower than most people assume
190mg260mg400mg

Trans fat

Zero per labelled serving
0g0g0g

Kids size, for reference

110 cal90mgsodium
McDonald's fries carry less sodium than almost anything else on the menu. A small order is 190mg where most sandwiches sit between 700 and 1,500mg. A Double Cheeseburger alone carries 1,110mg. If you are managing salt rather than calories, fries are a far softer addition to a meal than their reputation suggests.

How McDonald's French fries are made, and ordering no salt

McDonald's French fries are blanched, par-fried, frozen and then fried again at the restaurant. That double-fry is what produces the crisp exterior and soft centre, and it is why reheated McDonald's fries never taste the same.

STAGE OR INGREDIENTWHAT IT DOESWHERENOTE

Blanch and par-fry

Partially cooked before freezing
TextureFactoryThen frozen

Dextrose coating

A sugar applied before freezing
ColourFactoryEven browning

Sodium acid pyrophosphate

Stops the potatoes turning grey
AppearanceFactoryNot flavour

Oil blend

Canola, corn, soybean and hydrogenated soybean
FryingRestaurantPlus beef flavour

Second fry

Where the crisp comes from
TextureRestaurantTo order

Salt

Added immediately after cooking
FlavourRestaurantCan be skipped
Asking for McDonald's fries with no salt gets you a fresh batch, which is the real reason to do it. McDonald's will prepare unsalted fries on request, and because the standing batch is already salted they have to cook new ones. That means a short wait and genuinely fresh fries. Order at the counter or drive-thru before paying, or select the option in the app if it appears.
No added salt is not the same as sodium free. Salt transfers from shared bins and scoops, and the fries already contain sodium from the coating before any is added. If you are managing sodium for a medical reason, treat a no-salt request as a reduction rather than a guarantee, and work from McDonald's published figures.

How McDonald's French fries compare to other chains

On calories McDonald's fries sit mid-table. On sodium they are the lowest of the major chains, which runs against their reputation and is worth knowing if salt is what you watch.

LARGE FRIESCALORIESSODIUMNOTE

McDonald's

Lowest sodium of the major chains
480400mgBest on salt

Wendy's

~470~530mg+130mg

Burger King

~430~640mg+240mg

Five Guys

Much larger portion
~526VariesBiggest serving

McDonald's small, for scale

The lightest way to have fries
230190mgHalf a large
Ordering small instead of large saves 250 calories. That is the single most effective swap available at McDonald's, bigger than dropping cheese from a burger or skipping a sauce. It also halves the sodium. Comparison figures for other chains are approximate and drawn from their published data, which uses different portion sizes.

Medium fries in a meal

Medium fries add 320 calories to any combo, which is often more than people account for. A Big Mac meal comes to 1,120 with medium fries and a medium drink, where the sandwich alone is 590. Swapping to a small brings the meal down by 90 and to kids fries by 210.

Prices are a national midpoint recorded from restaurant menu boards in August 2026 and vary widely by location; McDonald's does not publish a national fries price. Nutrition figures are McDonald's published US data. Competitor figures are approximate and from their own published information. Contains wheat and milk. The full board is on our McDonald's menu with prices and allergen detail on our allergen menu.

McDonald's Fries FAQ

Are McDonald's fries gluten free?

McDonald's fries are not gluten free in the US. The natural beef flavouring added to the oil lists hydrolyzed wheat as a starting ingredient, so wheat is present as an ingredient rather than only through cross-contact. No modification changes that. UK and European fries carry no beef flavouring and are certified gluten free in several markets.

How many calories in McDonald's medium fries?

Medium fries are 320 calories, with 15g of fat, 43g of carbohydrate and 260mg of sodium. A small is 230, a large 480 and the kids size 110.

How many calories in McDonald's large fries?

480, with 23g of fat and 400mg of sodium. Ordering a small instead saves 250 calories — the single most effective swap available at McDonald's.

How much are McDonald's fries?

Around $2.79 small, $3.79 medium and $3.99 large at our national midpoint. McDonald's sets no national price and franchisees vary widely, so check the app for your restaurant.

Are McDonald's fries vegan or vegetarian?

McDonald's fries are neither, in the US. The beef flavouring contains hydrolyzed milk, which rules out both. It is an ingredient rather than a trace, so there is no way to order around it.

Can I order fries with no salt?

Yes, and you get a fresh batch because the standing fries are already salted. Ask at the counter or drive-thru before paying. It is a reduction rather than a sodium-free guarantee, since salt transfers from shared bins and the coating already contains some.

How much sodium is in McDonald's fries?

190mg small, 260mg medium, 400mg large. That is lower than most competing chains — Wendy's large runs around 530mg and Burger King's around 640mg — and far below most McDonald's sandwiches.

What sizes do McDonald's French fries come in?

Four: kids, small, medium and large. Weights run roughly 40g, 71g, 117g and 154g. The kids size can usually be ordered on its own without buying a Happy Meal.

Why do McDonald's French fries taste different abroad?

Because they are a different product. American fries carry a beef-derived flavouring added in 1990 when the company stopped using beef tallow. UK and European fries are potato, oil and salt. Menus by market are on our international menu page.

Are McDonald's French fries fried twice?

Yes. They are blanched and par-fried at the factory, then frozen, then fried again at the restaurant. That double-fry is what gives the crisp exterior and soft centre, and why reheating them at home never quite works.

Prices shown are based on typical U.S. McDonald’s menu prices as of August 2026 and may vary by location. Check your local restaurant or McDonald’s app for the latest prices.

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About the Author

Priya Raman

Pricing Editor

Priya has tracked fast food pricing since 2019. Every figure on this page comes from our own field survey: eight researchers photograph restaurant menu boards at 62 locations across 14 states in the first week of each month, and we publish the median. We do not use app pricing, which runs higher, and we do not carry figures forward from a previous month without re-checking them.