We all know fast food isn’t always a healthy option. But where do some of America’s biggest fast food chains rank?

WorldAtlas compiled a list of the 10 least-healthy fast food chains in the country. The restaurants, according to WorldAtlas, “routinely serve meals that can eclipse daily calorie limits in a single sitting while encouraging visits through bargain pricing and around-the-clock service.”

Here’s a look at the 10 least healthy fast food chains, according to WorldAtlas, ranked from better to worst:

10. Chick-fil-A

9. Little Caesars

8. Smashburger

7. McDonald’s

6. Quiznos

5. KFC

4. Dairy Queen

3. Taco Bell

2. Sonic

1. Wendy’s

Here’s what WorldAtlas had to say about Chick-fil-a:

“Chick-fil-A masks calorie-dense fried-chicken fare behind a wholesome image. An “original chicken sandwich” with medium waffle fries delivers ~ 750 mg sodium, about one-third of a day’s limit, and 800 calories, while sugary lemonade and milkshakes push totals sky-high. The chain dialed back its “No Antibiotics Ever” pledge in 2024, though its 2026 cage-free-egg goal remains. With 3,200-plus U.S. outlets and drive-throughs generating 60% of sales, Chick-fil-A encourages frequent, on-the-go indulgence nationwide.”

Here’s what WorldAtlas had to say about Wendy’s:

“Wendy’s square burgers and Frosty desserts create a caloric minefield. A Triple Baconator meal with large fries and medium Frosty hits about 2,160 calories, 54 g saturated fat and 3,400 mg sodium, exceeding most daily limits in one sitting. Seasonal beasts like the Pretzel Bacon Pub Triple top 1,500 calories by themselves. Breakfast croissant combos, Biggie Bag bargains and late-night hours foster oversized, frequent visits, landing Wendy’s firmly atop America’s most waist-widening, heart-straining chains.“