Calories in a 13-Inch Pizza

Quick Answer

A whole 13-inch cheese pizza has roughly 1,900-2,300 calories, which works out at about 240-290 calories per slice when it is cut into eight. Two slices come to around 530 calories, half a pizza about 1,060, and the whole 800 g pie roughly 2,120. Per 100 g, pizza averages about 265 calories.

Those are cheese-pizza figures. Pepperoni and other cured meats push each slice about 30-60 calories higher, while a thin crust with lighter cheese sits below the range. The slice is the unit worth thinking in, because the whole pizza is close to a full day of eating.

Is a 13-Inch Pizza Bad for Weight Loss?

Nothing about pizza rules out weight loss. The issue is that a 13-inch pizza is designed to be shared and frequently is not. The common patterns:

• Ordering a whole pizza for one person, at roughly 2,120 calories
• Eating half at about 1,060 calories and counting it as an ordinary dinner
• Garlic bread, dips and a sugary drink on top of the pizza itself
• Losing count of the slices because the box stays open on the table

Two slices at about 530 calories with a salad alongside is a straightforward meal in most budgets. Deciding the slice count before the box opens is what separates that from the alternative.

How to Track 13-Inch Pizza in SlimAI

1. Open SlimAI and add the meal.
2. Point the camera at the pizza and the photo scan estimates the slices and toppings.
3. Or search the food database for cheese pizza and log by slice count or by grams.
4. Voice and free text both work: "two slices of pepperoni pizza".
5. Check the slice size in the estimate. A slice from a 13-inch pie cut into eight is about 100 g, so grams are the most reliable way to correct a photo estimate.
6. Add dips, garlic bread and drinks as separate items, then save.

Chain and supermarket pizzas often carry a barcode and a printed nutrition label on the box, which gives you the manufacturer figures directly. For an independent pizzeria, the slice count and weight are what to set by hand.