How Many Calories Are In 1 Slice Of Cheese? | Smart Swap Tips

What Counts As “One Slice” In Real Life?

Packages aren’t consistent. A deli cut can be whisper-thin or hearty. Brands sell pre-cut squares that range from about 20 g to 28 g, while “processed singles” are often lighter (18–21 g). Since calories scale with weight, treat “one slice” as a weight, not a shape. If there’s no kitchen scale handy, use the label’s serving size and servings per pack to estimate grams per slice.

Cheese Slice Calories By Type And Typical Weight

To remove guesswork, here’s a clear view of common sandwich cheeses. Calories come from standard nutrient profiles based on USDA-sourced databases, scaled to practical slice sizes. Aged styles trend higher; part-skim styles trend lower. Brand recipes vary, so read your label when precision matters.

Cheese Type	Typical Slice Weight	Calories Per Slice
Cheddar (medium slice)	28 g (1 oz)	~114 kcal (USDA profile)
Cheddar (thin deli)	20–21 g	~80–86 kcal (scaled)
Mozzarella, part-skim	21 g	~63–70 kcal (scaled)
Swiss	28 g (1 oz)	~112 kcal (USDA profile)
Provolone	28 g (1 oz)	~98–100 kcal (typical profile)
Monterey Jack	28 g (1 oz)	~105–110 kcal (typical profile)
American, processed single	18–21 g	~60–90 kcal (brand-dependent)

Those numbers mirror standard nutrition references. For instance, a 28 g cheddar slice lands near 114 calories, while a 21 g part-skim mozzarella slice falls in the 60s. See the USDA-sourced entries at MyFoodData (cheddar) and MyFoodData (part-skim mozzarella) for the underlying per-gram values.

Want your sandwich to feel the same every time? Set your target by weight first—20 g for a lighter melt, 28 g for a classic slice—then choose the style for flavor. Snacks fit better once you set your daily calorie needs.

Why Slice Weight Changes The Math

Cheese calories scale linearly with grams. A 28 g cheddar slice at ~114 kcal means a 14 g half-slice is ~57 kcal. The same math holds for Swiss and provolone. This is handy when you want the taste without overshooting your budget—half a slice can deliver flavor with fewer calories.

What About Restaurant Slices?

Many chains use pre-portioned slices around 20–25 g. If nutrition facts aren’t listed, you can still estimate: match the cheese type in the table above and pick the weight closest to the photo or description. When in doubt, assume the higher end for aged styles and the lower end for part-skim styles.

Close Variant: Calories In A Single Cheese Slice (By Thickness)

When people ask about calories in one cheese slice, they often mean “thin vs standard vs thick.” Here’s a quick way to plan the cut. The calorie math below uses cheddar’s USDA profile as a working baseline; other full-fat aged cheeses will be close per gram.

Thin, Standard, Thick—How They Compare

Use this guide when you’re slicing at home or ordering at the counter. It keeps your sandwich consistent and makes logging easier.

Serving Size Rules You Can Trust

Food labels use “reference amounts” to pick serving sizes. For natural and processed cheeses, the FDA’s RACC guidance points manufacturers to per-occasion amounts that translate to common household measures like “1 slice.” That’s why you’ll often see one ounce listed on packs of cheddar, Swiss, or provolone.

Slice Thickness	Approx. Weight	Calories (Cheddar Baseline)
Thin Deli	15–20 g	~61–81 kcal
Standard	21–24 g	~86–98 kcal
Hearty Cut	25–28 g	~102–114 kcal

Comparing Popular Styles For Sandwiches

Cheddar: Bold and familiar. A standard 28 g slice sits near ~114 kcal with ~6–7 g protein. That protein helps a quick lunch feel more complete. See the USDA-sourced numbers summarized by MyFoodData.

Mozzarella (part-skim): Mild, stretchy, and lower in fat per gram. A 21 g slice typically lands in the mid-60s for calories. Handy when you want a lighter melt. Data reference: MyFoodData’s part-skim entry.

Swiss: Nutty flavor with a bonus—often lower sodium per ounce than many other cheeses. A 28 g slice sits near ~112 kcal and ~7–8 g protein, based on standard nutrient tables that aggregate USDA data.

Processed Singles: Why The Numbers Swing

“Singles” are formulated foods. Moisture, emulsifiers, and dairy blends change density and weight per slice, so calories can swing from the low-60s into the 80s. Always check the actual slice weight on the label before logging.

How To Choose The Right Slice For Your Goal

For fewer calories: Pick part-skim mozzarella or a thinner cut of a bold cheese. One lighter slice leaves room for avocado, turkey, or extra veg without pushing lunch over your target.

For more protein: Swiss and cheddar deliver ~6–8 g per ounce. Pair with lean deli meat or eggs to turn a snack into a small meal.

For lower sodium: Some Swiss varieties trend lower per ounce than cheddar or American. Compare labels—sodium ranges are wide even within one style.

Label Smarts In 30 Seconds

• Check grams per slice. This drives the calorie count more than anything.
• Scan fat type. Full-fat aged cheeses pack more saturated fat per gram than part-skim choices.
• Note sodium. Brands vary two-to-four-fold per slice.

Make The Math Work For Meals

Breakfast: Half a slice of cheddar on a fried egg gives flavor for ~55 calories, or use a 21 g mozzarella slice for a softer profile at ~65–70 calories.

Lunch: One 21–24 g slice on whole-grain bread with turkey and greens keeps a sandwich balanced. Add mustard, not extra cheese, if you want more punch without more calories.

Snack: Roll a 15–18 g strip with sliced cucumber or bell pepper. It’s tidy, tasty, and easy to portion.

Method Notes (How These Numbers Were Built)

Calories were calculated from standard nutrient profiles derived from USDA-sourced databases and then scaled to practical slice sizes. For cheddar and Swiss, one ounce (28 g) values come out near ~114 kcal and ~112 kcal per slice, respectively. Part-skim mozzarella trends lower per gram. For serving size context, manufacturers refer to the FDA’s reference-amount tables when assigning common measures like “1 slice” on Nutrition Facts panels.

Frequently Missed Details That Skew Your Count

Moisture content: Aged cheese carries less water and more fat per gram than fresh styles. That’s why parmesan, cheddar, and Swiss read higher than mozzarella per ounce.

Sliced vs shredded: A “slice” gives you a fixed footprint; shredded is easy to over-pour. If you swap to shreds, weigh or measure by cup and use the label’s serving size.

Brand recipes: Reduced-fat or low-sodium versions shift the numbers. Don’t assume all provolone slices match—compare grams, then calories.

Tiny Tweaks That Save Big Calories

• Use one bold slice instead of two mild slices.
• Ask for thin-cut at the deli counter.
• Stack flavor with pickles, onions, mustard, or pepperoncini instead of extra cheese.

Bottom Line: One Slice, Clear Numbers

Use grams to guide you and the ranges fall into place. A thin deli cut runs about 60–80 calories. A standard 21–24 g slice lands around 85–100. A hearty 28 g cut is close to 110–120. Pick the style for taste, but let the weight set your portion.

Want an easy next step? Skim our foods to lower cholesterol for heart-friendly swaps across your week.