Culver’s and McDonald’s are closer in nutrition than most people expect. A Culver’s ButterBurger and a McDonald’s McDouble both clock in at 390 calories with roughly the same protein (20 and 22 grams, respectively). The real differences show up when you look beyond the basic burger: how each chain handles fish, sides, and fresh options.
The Burger Matchup Is Nearly a Tie
If you’re comparing entry-level single-patty burgers, there’s almost no nutritional gap. The ButterBurger and the McDouble deliver identical calorie counts at 390 each, and the protein difference is just 2 grams in McDonald’s favor. Both chains use beef with no fillers. Culver’s uses a blend of fresh, never-frozen chuck, plate, and sirloin. McDonald’s now uses fresh beef for its classic burgers like the Big Mac and Quarter Pounder in the U.S., though some items still use frozen patties.
Where things diverge is when you start building up. Culver’s signature items tend to be larger and richer. A ButterBurger Deluxe or a double adds calories quickly, and the buttered, toasted bun that gives the burger its name contributes extra fat compared to a standard McDonald’s sesame bun. If you stick to the simplest version at either chain, though, the calorie picture is virtually identical.
Fish Sandwiches Tell a Different Story
The fish sandwich is where the two chains split dramatically. McDonald’s Filet-O-Fish comes in at 380 calories and 19 grams of fat. Culver’s North Atlantic Cod sandwich hits 600 calories and 34 grams of fat, nearly double the fat content.
Culver’s uses cod, a higher-quality fish that arrives as a thick, flaky fillet with a heavy crispy breading. McDonald’s uses Alaskan pollock pressed into a square patty that resembles a fish stick. You’re getting a more premium piece of fish at Culver’s, but you’re paying for it in calories and fat. If you’re watching your intake, the Filet-O-Fish is the lighter choice by a wide margin.
Sides Can Make or Break Your Meal
This is where Culver’s can get you into trouble. The chain’s most popular side is Wisconsin cheese curds: battered, deep-fried chunks of cheese. A regular order runs over 500 calories and packs more fat than a burger on its own. A medium order of McDonald’s fries, by comparison, sits around 320 calories. Both are fried, but cheese curds add the calorie density of melted cheese on top of the breading.
Culver’s does offer a side salad and coleslaw as lighter alternatives, which gives you an option McDonald’s largely doesn’t. McDonald’s removed salads from its national U.S. menu in 2020 to simplify operations, and as of 2024, leadership acknowledged that customers weren’t really looking to McDonald’s for salads. Your lighter side options at McDonald’s are essentially limited to apple slices, which are marketed toward kids’ meals.
Where Culver’s Has a Real Edge
Culver’s menu offers more flexibility if you’re trying to eat a balanced fast-food meal. You can pair a single ButterBurger with a side salad and end up with a reasonable calorie total. The fresh-never-frozen beef and hand-battered fish signal a focus on less processed ingredients, even if the calorie counts don’t always reflect that.
Culver’s also tends to prepare food to order rather than holding items under heat lamps, which doesn’t change nutrition but does affect ingredient quality in a broader sense. The tradeoff is portion size. Culver’s leans into Midwest generosity with its servings, and many of its popular items (concrete mixers, cheese curds, deluxe burgers) are calorie-dense comfort food.
Where McDonald’s Has the Advantage
McDonald’s core menu items tend to be smaller and more calorie-controlled. A basic cheeseburger is 300 calories. A McChicken is 400. These aren’t health foods, but their portions are modest enough that a single sandwich keeps your meal in a manageable range. McDonald’s also posts detailed nutrition information across every item, making it straightforward to calculate what you’re eating before you order.
The simplicity of the menu works in your favor if you’re counting calories. There are fewer temptations to add rich sides, and the portions are standardized at sizes smaller than what Culver’s typically serves.
The Bottom Line on Nutrition
Neither chain is a health food destination, and the base-level burgers are nutritionally interchangeable. Culver’s offers higher-quality ingredients, fresher preparation, and more variety including salads. But many of its signature items, especially the fish sandwich, cheese curds, and frozen custard, carry significantly more calories and fat than their McDonald’s equivalents. McDonald’s gives you smaller, more predictable portions that are easier to fit into a calorie budget.
Your healthiest meal at Culver’s (a single ButterBurger with a side salad) is arguably better than your healthiest realistic meal at McDonald’s, simply because McDonald’s no longer serves salads nationally. But your unhealthiest meal at Culver’s can easily exceed 1,500 calories before you finish the cheese curds. The chain you’re at matters less than what you order when you get there.