A basic hamburger with a single beef patty and a bun contains roughly 250 to 400 calories. That range covers the simplest versions you’d find at a fast food counter or make at home. But the moment you add cheese, bacon, extra patties, or creamy sauces, the number climbs fast, often past 800 or even 1,000 calories for a fully loaded restaurant burger.
Fast Food Burger Calories by Chain
The simplest fast food hamburgers are surprisingly modest in calories. A McDonald’s Hamburger comes in at 250 calories, and a Burger King Hamburger is 260. These are bare-bones builds: a thin patty, a standard bun, ketchup, mustard, maybe pickles and onions.
Once you step up in size, the numbers jump. An In-N-Out Hamburger with onion is 390 calories. Wendy’s Dave’s Single, which uses a larger quarter-pound patty, hits 590 calories. The difference comes down to patty weight and toppings. A quarter-pound patty alone has roughly twice the calories of the small patties used at McDonald’s and Burger King.
Doubling the patty or adding cheese typically adds 100 to 250 calories per upgrade. A basic cheeseburger at any chain runs about 50 to 80 calories more than its plain hamburger counterpart, mostly from the slice of American cheese.
What Makes a Burger High or Low Calorie
The patty is the biggest single variable. A standard 4-ounce (quarter-pound) beef patty made from 80/20 ground beef contains around 280 calories. Swap to 90/10 lean beef and that drops to roughly 200 calories. Fast food “regular” patties are often closer to 1.5 or 2 ounces, which is why their basic burgers stay so low.
The bun adds 120 to 150 calories for a standard white hamburger bun. Brioche buns, which are richer with butter and egg, tend to land around 150 to 200 calories. Lettuce wraps, if you go that route, cut the bun calories to nearly zero.
Then there are the toppings that quietly pile on. A single slice of bacon adds about 45 calories. Cheese ranges from 70 to 110 calories per slice depending on the type. Avocado adds roughly 50 calories per two tablespoons. And fried onion rings or crispy onion straws on a burger can tack on another 80 to 150 calories.
How Sauces Change the Count
Condiments are where calories sneak in without you noticing. One tablespoon of mayonnaise adds 94 calories and 10 grams of fat. Most restaurant burgers use more than a tablespoon, and “special sauces” are almost always mayo-based, so you could easily be looking at 150 or more calories just from the spread.
Ketchup is far lighter at 17 calories per tablespoon. Mustard is nearly negligible, around 5 calories per teaspoon. BBQ sauce falls in between at about 30 calories per tablespoon. If you’re trying to keep the calorie count down, swapping mayo-based sauces for mustard or ketchup is one of the easiest moves you can make.
Sit-Down Restaurant Burgers
Restaurant burgers from casual dining chains are a different category entirely. These typically use 6- to 8-ounce patties (sometimes two), brioche buns, generous sauce, and premium toppings like fried eggs, caramelized onions, or guacamole. A fully built burger at a sit-down restaurant commonly lands between 800 and 1,200 calories before you even touch the fries.
The reason is straightforward: restaurants use fattier beef blends for flavor, butter the buns on the grill, and apply sauces liberally. None of those choices are visible on the plate, but they add hundreds of calories compared to what you’d get building the same burger at home with more control over portions and ingredients.
Homemade Burger Calories
A homemade burger gives you the most control. Using a 4-ounce patty of 90/10 lean ground beef (about 200 calories), a standard bun (130 calories), lettuce, tomato, onion, and mustard, you can build a satisfying burger for around 350 to 400 calories total. Add a slice of cheddar and you’re closer to 470.
If you prefer a richer burger with 80/20 beef, cheese, and a tablespoon of mayo, expect roughly 550 to 600 calories. That’s still well below most restaurant versions because you’re using a single standard-sized patty and controlling the sauce.
Plant-Based Burger Calories
Plant-based patties are comparable to beef in calories, not lower. A 4-ounce Impossible Burger patty has 240 calories, and a Beyond Burger patty has 230. Both are similar to a same-sized lean beef patty. The calorie savings, if any, are minimal.
Where they differ is in the type of fat (plant-derived oils like coconut and sunflower instead of animal fat) and the absence of cholesterol. But if your main goal is cutting calories, choosing a plant-based patty over beef won’t make a meaningful difference. Portion size, bun choice, and sauces still matter far more.
Quick Calorie Reference by Burger Type
- Basic fast food hamburger (small patty, plain): 250 to 270 calories
- Fast food quarter-pounder with cheese: 500 to 600 calories
- Fast food double cheeseburger: 700 to 900 calories
- Sit-down restaurant burger with toppings: 800 to 1,200 calories
- Homemade burger (lean beef, light toppings): 350 to 400 calories
- Homemade burger (regular beef, cheese, mayo): 550 to 600 calories
- Plant-based patty on a bun: 350 to 450 calories
The single biggest factor in any burger’s calorie count is the total weight of meat and cheese. Everything else, the bun, the vegetables, even the ketchup, is secondary. If you’re tracking calories, knowing your patty size gets you most of the way to an accurate estimate.