How Many Calories for Pizza?
A slice of Margherita pizza has around 210-260 calories depending on size and brand. A full Tesco stonebaked Margherita (306g) has roughly 790 calories. Pizza is typically NOVA 3-4 when shop-bought.
Calories by preparation
| Method | Calories | NOVA |
|---|---|---|
| 1 slice Margherita (thin crust, ~100g)Thin crust Margherita is among the lowest-calorie pizza options | 230 | 3 |
| 1 slice Pepperoni (regular, ~120g)Pepperoni adds ~80 kcal per slice vs MargheritaPepperoni typically contains dextrose, sodium nitrite, flavourings — NOVA 4 | 310 | 4 |
| 2 slices MargheritaTwo slices is a typical portion — nearly 500 kcal | 460 | 3 |
| Full Tesco Stonebaked Margherita (306g)Easy to eat the whole thing — nearly 800 kcal | 790 | 3 |
Nutrition per 100g
| Nutrient | Per 100g | Per serving |
|---|---|---|
| Energy | 287.5 kcal / 1203 kJ | 287.5 kcal |
| Protein | 12.8g | 12.8g |
| Carbohydrates | 26.9g | 26.9g |
| of which sugars | 3.5g | — |
| Fat | 13.9g | 13.9g |
| of which saturated | 5.5g | — |
| Fibre | 1.7g | — |
| Salt | 1.2g | — |
Serving size: 1 slice (~125g) · Source: Tesco product page, October 2025
Glucose impact
High
Glucose risk
Pizza dough is refined white flour — high glycaemic index (around 80). A full pizza delivers 90-100g of carbohydrate. Expect a significant blood sugar spike, especially from thin-crust varieties where the dough-to-topping ratio is high.
Processing level
Shop-bought pizza ranges from NOVA 3 (traditional Margherita with real mozzarella) to NOVA 4 (cheaper brands using modified starch, emulsifiers, flavourings in the dough and processed toppings). Check the ingredients — particularly the dough and the cheese.
Pizza at Tesco
Source: Tesco product page, October 2025
*Prices were correct at the time of collection and may have since changed. Check Tesco.com for current pricing.
What to watch for when shopping
Almost all shop-bought pizza is NOVA 3-4 due to modified starch, emulsifiers, dextrose, and flavourings in the base, sauce, and cheese. A single slice of standard frozen pizza has 200-280 kcal. Thin crust saves 50-80 kcal per slice. Making pizza at home with simple dough, passata, and real mozzarella keeps it at NOVA 2.
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