If you’re asking how many kcal in a slice of pizza, the most honest answer is: it depends on the slice size, crust, cheese amount, and toppings. That said, most “standard” slices land in a predictable range.

Typical calorie range for 1 slice (easy estimate)

For an average slice of cheese pizza, many nutrition databases cluster around ~240–300 kcal per 100g, and the slice’s weight is what changes the final number. For example, cheese pizza is often listed around ~266 kcal per 100g in USDA-style nutrition data sources.

Because slices can weigh anywhere from ~90g to 180g+, the calorie total can swing a lot:

• Small/normal cheese slice (about 90–110g): ~240–320 kcal
• Large/heavy cheese slice (about 150–180g): ~400–550 kcal (common for big “NY-style” cuts)

So, when someone asks how many calories in a slice of pizza, a practical “good enough” estimate is:

• Cheese slice: ~250–350 kcal for many regular slices
• Big slice / heavy slice: ~400–550 kcal (often seen in NY-style sizing)

Why “kcal” and “calories” are the same on food labels?

Another common confusion: kcal and “Calories” (capital C) are the same thing in nutrition tracking. When you read “Calories” on most apps/labels, that’s kilocalories (kcal).

So if you’re searching:

• how many kcal in a slice of pizza
• how many calories in a slice of pizza
• how many calories is in a pizza slice

…you’re asking the same question—just different wording.

The “slice problem”: pizza is not standardized

Top results on calorie questions usually emphasize this point: there is no single calorie number because pizza slices are not standardized. A thin slice from one place may be half the weight of a thick, cheesy slice from another place. That’s why big brands often push you toward their official nutrition tools and calculators rather than a single “average slice” number. Domino’s, for example, provides nutrition tools for calculating calories per slice based on what you order.

The simplest takeaway

If you need a fast answer right now:

• Regular cheese slice: assume ~300 kcal
• Pepperoni/meat slice: assume ~350–450 kcal
• Big NY-style slice: assume ~450–550 kcal

Then adjust based on crust and toppings (we’ll do that next). If your main goal is accuracy, you’ll want to estimate slice weight or use a known nutrition source from the restaurant.

(And yes—this section still answers the focus keyword: how many kcal in a slice of pizza depends mostly on slice size and toppings, but the ranges above are the most useful starting point.)

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What changes pizza slice calories (size, crust, cheese, and toppings)

To estimate how many kcal in a slice of pizza more accurately, you need to understand what moves the calorie number up or down. Across the top ranking “calories in a slice of pizza” style pages, the same factors show up again and again: slice size/weight, crust thickness, cheese amount, and toppings.

1) Slice size and weight (the #1 factor)

Two cheese slices can look similar but weigh very different amounts. Nutrition databases often list values per 100g (like ~266 kcal per 100g for cheese pizza).

So if you know the slice weight, the math becomes easy.

Quick weight method (no stress, just approximate):

• If cheese pizza is ~260–270 kcal per 100g, then:
  • 100g slice ≈ 260–270 kcal
  • 150g slice ≈ 390–405 kcal
  • 180g slice ≈ 470–490 kcal

That’s why the same question (“how many calories in a slice of pizza”) can have answers that differ by 200+ calories.

2) Crust type: thin vs hand-tossed vs deep dish

Crust changes calories mainly because it changes bread amount and oil content. Many guides group slices like this:

• Thin crust: usually fewer calories (less dough)
• Regular crust: moderate
• Thick/deep dish: more dough + sometimes more oil/cheese = higher calories

If you’re trying to estimate how many calories is in a pizza slice, crust is the easiest visual clue. Thick crust slices are often the ones that jump from ~300 kcal to ~450+.

3) Cheese amount (the hidden calorie driver)

Cheese adds fat and calories quickly. Even within “cheese pizza,” the actual cheese layer differs wildly:

• Light cheese: lower calories
• Extra cheese: noticeably higher calories

If you order “extra cheese,” your how many kcal in a slice of pizza estimate should go up, even if the slice size stays the same.

4) Toppings: veggies vs meat vs “loaded”

Toppings can add anywhere from a small bump to a big jump:

• Veggie toppings (onion, peppers, mushrooms): usually a small increase
• Meat toppings (pepperoni, sausage, bacon): bigger increase because of fat
• “Loaded” slices (meat + extra cheese + sauces): highest calorie slices

If you specifically searched “how many calories in pizza slice of ny pizza calories”, note that NY slices often come large, and many pizzerias add generous cheese and oil—so meat toppings can push a slice into the 500+ range more often.

5) Oils, butter, and finishing touches

Some places brush crust with garlic butter, add parmesan/olive oil after baking, or use heavier sauce. These “extras” don’t always look like much, but they increase kcal.

6) Frozen vs restaurant vs homemade

• Frozen pizza is standardized—nutrition labels are often more reliable.
• Restaurant pizza varies more.
• Homemade can be the most flexible (you control cheese, crust thickness, oil).

This is why official nutrition calculators from big brands can be useful for accuracy. Domino’s provides calorie information and tools based on the exact pizza build.

Practical cheat sheet (topping add-ons)

Use this when estimating how many kcal in a slice of pizza:

• Cheese slice: baseline
• + pepperoni/meat: add a moderate bump
• + extra cheese: add another bump
• + thick crust: bump again
• + sauces/oils: bump again

Even without perfect math, this keeps you from underestimating.

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NY Pizza calories: how many calories in a New York slice (and why it’s often higher)

A lot of people search specifically for NY pizza calories because New York-style slices are famous for being big, wide, and foldable. If you’re asking how many kcal in a slice of pizza and the slice is NY-style, your estimate should usually start higher than a small chain slice—mostly because of slice weight.

What makes a New York slice different?

New York-style pizza is commonly:

• larger diameter pies (often 18″ or bigger)
• big triangular slices
• thin-ish crust but wide area
• often a noticeable amount of cheese and oil

Even though the crust is “thin,” the slice can still be heavy because the slice itself is large.

Real numbers commonly shown for NY slices

Some nutrition-tracking databases list a New York pizza slice around ~508 calories per slice (serving sizes around ~180g are often shown).

That doesn’t mean every NY slice is exactly 508 kcal, but it’s a useful reference point for the “big slice” category.

So if your question is:

• how many calories in a slice of pizza (NY style)
• how many calories in pizza slice of ny pizza calories
• how many calories is in a pizza slice (large foldable slice)

…a realistic common range is:

• NY cheese slice: ~450–550 kcal
• NY pepperoni/meat slice: ~500–650 kcal

Why NY slice calories vary so much?

Even in New York, pizzerias are not identical. The calorie total can change based on:

• how much cheese they use
• how oily the bake is
• thickness of the dough at the rim
• how big the actual slice cut is

That’s why some sources you’ll see online give wide ranges or rely on database averages. (It’s also why user-estimates on forums are all over the map—those are not as reliable as standardized nutrition data.)

Chain pizza vs local pizzeria: which is easier to track?

Chains are easier to track because they publish nutrition calculators. For example:

• Domino’s provides nutrition tools and calorie references for slices based on order specifics.
• Pizza Hut nutrition tools exist through nutrition calculator platforms.

Local pizzerias often don’t publish calories, so you estimate by:

1. identifying style (NY slice, deep dish, thick crust, etc.)
2. estimating weight (or comparing to a known database entry)
3. adjusting for toppings

Simple “NY slice” estimating method you can actually use

If you want to answer how many kcal in a slice of pizza for NY style without overthinking:

Step 1: Pick a base number

• Start at ~500 kcal for a large NY cheese slice (common database reference).

Step 2: Adjust for toppings

• Add some calories for pepperoni/meat.
• Add more if it’s extra cheese or “loaded.”

Step 3: If you can, weigh it once

If you have a kitchen scale, weighing the slice instantly improves accuracy. Then you can use a per-100g reference like ~266 kcal per 100g for cheese pizza as a baseline.

The bottom line for NY pizza calories

If your slice is truly New York-style (big and foldable), a lot of people underestimate it. For many NY-style slices, “around 500 kcal” is a safer starting point than “around 300 kcal.”

That makes your answer to how many kcal in a slice of pizza more realistic—especially if you’re tracking intake for weight loss or fitness goals.

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How to calculate calories in your exact slice (and fit pizza into your day)?

Now let’s make this practical. If you want to know how many kcal in a slice of pizza with better accuracy than a generic guess, you have three solid options. These match what top results usually recommend: use official nutrition data when possible, estimate by weight when not, and track consistently.

Option 1: Use the restaurant’s official nutrition calculator

If you’re eating from a major brand, this is the best accuracy you’ll get without weighing food.

• Domino’s provides nutrition tools to calculate calories (and more) based on the exact pizza type and serving.
• Pizza Hut nutrition calculators exist on nutrition platforms used for meal building.

Why this matters: it answers “how many calories in a slice of pizza” for the specific crust, toppings, and serving size the brand uses.

Option 2: Use the “weigh it once” method (most accurate for local pizza)

If you can weigh the slice (even once), you can estimate calories with a simple formula:

Easy formula

1. Weigh your slice in grams
2. Multiply by a per-100g calorie value (as a baseline)

Many nutrition sources list cheese pizza around ~266 kcal per 100g.

Example:

• Slice weight = 160g
• Calories ≈ 160 × (266/100) = 160 × 2.66 = 425.6 kcal (round to 426 kcal)

This method makes your “how many kcal in a slice of pizza” answer much more personal and accurate.

Option 3: Use a trusted database entry (when you can’t weigh)

If you can’t weigh it, use a reputable database entry close to what you ate:

• Cheese pizza per 100g values (USDA-style entries) are widely referenced.
• NY slice entries often show around the ~500 kcal level per large slice serving.

Then adjust for toppings and crust thickness.

Portion tips: how to enjoy pizza without blowing your calorie target

If your goal is weight management, you don’t have to “quit pizza.” You just need a plan.

Simple strategies (easy and realistic)

• Pair pizza with a high-volume side: salad, veggies, clear soup
• Choose toppings wisely: veggie toppings often keep calories lower than multiple meats
• Set your slice count in advance: decide 1–2 slices, not “until I’m full”
• Watch drinks: sugary soda can add a lot of extra calories
• Balance the rest of the day: lighter breakfast/lunch if pizza is dinner

Quick FAQ (based on common search questions)

The most accurate answer to “how many kcal in a slice of pizza”

If you only remember one thing, remember this:

• Pizza calories are mostly about slice weight.
• Use official calculators for chain pizza.
• If it’s local pizza, weighing the slice once gives the best estimate using per-100g references like ~266 kcal per 100g for cheese pizza.

That’s how you move from a random guess to a confident, repeatable estimate—every time you wonder how many kcal in a slice of pizza.