What this tool does
Pick the pie diameter, crust style, a topping pattern, and how many slices you ate. The total is table math, not a lab tray from your shop.
How it works
A typical 1/8 slice of a 14-inch regular cheese pizza sits near 285 kcal on USDA-style rows. Pepperoni, deep dish, and larger pies scale up. Thin crust scales down. Meat-lovers adds a flat extra.
How to interpret the result
Two regular 14-inch cheese slices are often ~570 kcal before garlic butter and soda. A “slice” from a 16-inch pie is a different food than a slice from a 12-inch pie.
Example
Two slices, 14-inch, regular, cheese: 570 kcal, about 24 g protein. Add pepperoni and you are over 600. Deep dish meat is a meal, not a snack.
Common mistakes
- Counting a restaurant “slice” as 1/8 when they cut 6.
- Forgetting the stuffed crust and the side of ranch.
- Logging thin-crust numbers for a pan pizza.
When this estimate may be off
- Wood-fired pies with a pint of oil in the crumb.
- Frozen brand labels — read the box instead.