$3.99 is the typical medium fries price, on a $3.29 to $3.99 band, at 320 calories.
The typical McDonald's Medium World Famous Fries price is $3.99, on a recorded band of $3.29 to $3.99 built from nine readings taken in August 2026, six of which agreed on that figure. McDonald's puts the carton at 320 calories. That figure carries more weight than any other number in the section, because 320 is the fries portion inside the company's own published meal totals, from the Big Mac Meal down to the Filet-O-Fish.
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What you need
5 itemsWorld Famous Fries (Medium) price and calories
| Item | Typical price | Price range | Calories |
|---|---|---|---|
| World Famous Fries (Medium) | $3.99 | $3.29 – $3.99 | 320 Cal |
If something goes wrong
A meal costs far more than the sandwich plus this carton
- Cause
- A meal bundles a medium fries and a medium drink, and the uplift charged for that pair is set locally, exactly as the fries price is.
- Fix
- Price the parts in the McDonald's app first. On calories the bundle is predictable at 570 or 590; on money it is whatever the board says.
Published meal calories look too high to be the sandwich plus fries
- Cause
- The published total includes a medium drink, and on the company's own arithmetic a medium Coca-Cola is worth 270 calories against 250 for a medium Sprite.
- Fix
- Subtract the drink before comparing. A Big Mac Meal at 1,170 is 580 for the sandwich, 320 for these fries and 270 for the Coca-Cola.
The band is narrow here and wide on the other two sizes
- Cause
- Nine readings came back for the medium against seven for the small and six for the large, and more readings on a heavily quoted item tighten the middle.
- Fix
- Weight this row above its neighbours. A $3.29 to $3.99 band built on nine readings is firmer than a two-cluster split on six.
The 320 that turns up inside every meal total
Most fries pages stop at the carton. What happens once it goes into a box with a sandwich and a cup is more interesting, because that is where the company's own numbers become checkable.
The company publishes a calorie total for each meal, and four of them subtract cleanly. A Big Mac Meal is stated at 1,170 calories with a medium Coca-Cola and medium World Famous Fries, against 580 for the sandwich by itself, leaving 590. A 10 Piece Chicken McNuggets Meal is stated at 1,000 against 410 for the nuggets, leaving 590 again. A Filet-O-Fish Meal is 950 against 380, leaving 570, and a 3 Piece McCrispy Strips Meal is 970 against 400, leaving 570. Take these fries out at 320 and the remainder is 270 in the first pair and 250 in the second, which is the gap between a medium Coca-Cola and a medium Sprite. Four separate meal pages, one constant side.
That is worth more than a tidy sum. 320 is not a lone figure on a product page; it is load-bearing across the menu, and it holds.
What's in it
One carton of fries, and a nutrition panel that stops almost immediately. McDonald's publishes 320 calories and the product page returned that twice under separate reads. Macros and the allergen list could not be read at all, because a script in the browser draws that table after the page arrives and a plain read finds it empty. No serving weight is published either, which leaves calories as the only measure of how much potato is in the box: 230 in a small, 320 here, 480 in a large.
On price this is the best-evidenced row in the section. Nine readings of published US prices in August 2026 produced four distinct values between $3.29 and $3.99, and six of the nine agreed on $3.99. The large, by contrast, split into two clusters and refused to settle.
Is it worth it
As a standalone order, it is the middle answer to a middle question. A medium at $3.99 for 320 calories runs near 1.25 cents a calorie, against 1.26 for the small and 1.04 for a large bought at the bottom of its band. The rate improves as the carton grows.
Inside a meal the question barely arises, because this is the size the box comes with unless somebody asks for something else. Anyone counting calories has a simpler lever than the fries: the drink. Swapping a medium Coca-Cola for water removes 270 calories and leaves the food untouched.
Price variation has one cause worth naming. Around 95% of US restaurants are franchised, a share stated in McDonald's Form 10-K, and each operator prices the board, which is why a range beats an average here. For a binding figure, use the McDonald's app.
World Famous Fries (Medium) at a glance
- McDonald's price
- not published
- Calories
- 320, from McDonald's
- Typical price
- $3.99
Questions people ask
How much is a medium fries at McDonald's?
$3.99 is the typical figure, agreed by six of the nine readings, on a band of $3.29 to $3.99 recorded from published US listings in August 2026. Nine readings sit behind that row.
How many calories are in a medium McDonald's fries?
320, published by McDonald's and confirmed twice. The same figure falls out of four of the company's own meal totals.
How much does a medium fries and drink add to a meal?
590 with a medium Coca-Cola, 570 with a medium Sprite, taken from McDonald's own meal pages. Of that, 320 is the fries.
Which fries size gives the most food per dollar?
A large, when the restaurant sits near $4.99. On the recorded figures a large runs near 1.04 cents a calorie, a medium near 1.11, a small near 1.26. At $6.29 the ranking inverts and the medium wins.
Is this page an official McDonald's price list?
No. Only the 320-calorie figure comes from McDonald's. Every price here was recorded from published US listings in August 2026, and the date sits under the table.
Can this site tell me the price at my local McDonald's?
Not for one restaurant, no. Franchisees run about 95% of US locations and price their own menus, so a national band is the limit of what an outside page can offer. The McDonald's app resolves it once a location is set.