A standard one-ounce (28-gram) slice of American cheese contains about 100 calories. Thinner individually wrapped singles, which typically weigh around 21 grams, come in closer to 60 to 65 calories per slice. The exact number depends on the style of slice and the specific product, but that range covers most of what you’ll find at the grocery store or deli counter.
Calories by Slice Type
The calorie count shifts based on how thick the slice is and how the cheese is classified. A full one-ounce deli slice of processed American cheese runs about 102 calories, with 5 grams of fat and nearly 4 grams of protein. The thinner, plastic-wrapped singles you’d toss on a burger are lighter, often landing around 63 calories per slice because they weigh less.
If you’re stacking two singles on a sandwich, you’re looking at roughly 126 calories from the cheese alone. Three deli slices on a sub pushes past 300 calories before you’ve added anything else. Knowing the weight of the slice matters more than counting slices, since brands vary in thickness.
Full Nutrition Breakdown Per Ounce
Beyond calories, a one-ounce slice of American cheese delivers about 5 grams of total fat, with a significant portion of that coming from saturated fat. Protein sits around 4 grams per slice, making it a moderate protein source but not a standout compared to other cheeses.
Sodium is where American cheese gets attention. A single one-ounce slice packs roughly 417 to 468 milligrams of sodium. That’s about 20 percent of the total daily sodium most adults should aim to stay under. Two slices on a grilled cheese sandwich could account for nearly half your sodium budget for the day before you’ve added bread, butter, or soup on the side.
Calcium content is modest at about 66 milligrams per slice, covering around 5 percent of your daily needs. That’s less impressive than harder cheeses like cheddar or Swiss, which pack more calcium per ounce. Vitamin D is essentially absent.
How American Cheese Compares to Cheddar
People often assume processed American cheese is higher in calories than natural cheese, but it’s actually the reverse. Ounce for ounce, cheddar contains about 115 calories compared to American cheese’s 102. The reason is simple: cheddar is denser and contains more milkfat, while processed American cheese has higher moisture content, which dilutes the calorie density slightly.
The real tradeoff is sodium. Cheddar contains roughly 185 milligrams of sodium per ounce, less than half the 468 milligrams in processed American cheese. If you’re watching salt intake, that difference adds up fast. On the other hand, American cheese melts more smoothly because of the emulsifying salts used during processing, which is partly why it’s the default for burgers and grilled sandwiches.
Why Labels Say Different Things
Not all American cheese is the same product, and the FDA maintains strict distinctions. What’s labeled “pasteurized process cheese” must contain at least 47 percent milkfat in its solid portion and no more than 43 percent moisture. Step down to “pasteurized process cheese food,” and the rules loosen: fat only needs to hit 23 percent, and moisture can reach 44 percent. “Cheese spread” allows even more moisture, up to 60 percent.
These differences matter nutritionally. A true pasteurized process cheese slice will be higher in fat and calories than a “cheese product” or “cheese food” labeled alternative. The individually wrapped singles many people buy often fall into the cheese food or cheese product category, which is one reason their calorie counts run lower per slice. Checking the label tells you which category you’re actually eating.
Fitting American Cheese Into Your Diet
At roughly 100 calories per ounce, American cheese is a mid-range option. It’s not significantly more caloric than most other cheeses, and the portion sizes tend to be naturally controlled since it comes pre-sliced. The main consideration is saturated fat and sodium rather than calories alone. The American Heart Association recommends keeping saturated fat under 10 percent of total daily calories, which works out to about 22 grams on a 2,000-calorie diet. One slice of American cheese uses up a relatively small fraction of that, but it adds up if cheese appears at every meal.
For sandwiches and burgers where you want that specific melty texture, one slice keeps you in a reasonable range. If you’re using it in a recipe like mac and cheese or a casserole where you might use several ounces, counting by weight rather than by slice gives you a more accurate picture of what you’re actually consuming.