Family-size pizzas seem more profitable because they generate more revenue, but per square centimeter you often earn less. This happens because of the mathematical relationship between diameter and area - a 40cm pizza has 4x more surface area than a 20cm one. You'll discover exactly how to calculate the margin per size and which format generates the most profit.
Why pizza sizes are confusing for your margin
A 32cm diameter pizza costs €18.50. A family-size format of 40cm costs €26.50. Which one generates more profit? The answer isn't straightforward.
The issue lies in the surface area. Pizzas are round, so the area grows exponentially with the diameter:
- Pizza 32cm: area = π × 16² = 804 cm²
- Pizza 40cm: area = π × 20² = 1,257 cm²
The large pizza has 56% more area, but costs only 43% more. That means more dough, more toppings, more cheese - but not proportionally more revenue.
Calculate the actual cost price per pizza size
For a fair comparison, you need to convert all ingredients to the actual usage per size.
💡 Example: Margherita pizza
Ingredients per 100 cm² pizza:
- Dough: €0.08
- Tomato sauce: €0.12
- Mozzarella: €0.35
- Basil: €0.05
- Oil: €0.02
Cost price per 100 cm²: €0.62
Now you calculate what each pizza size actually costs:
- Pizza 32cm (804 cm²): 804 ÷ 100 × €0.62 = €4.99
- Pizza 40cm (1,257 cm²): 1,257 ÷ 100 × €0.62 = €7.79
Compare the margin per size
Now you can calculate the actual margin per pizza size:
💡 Example: Margin comparison
Pizza 32cm:
- Selling price: €18.50 (incl. VAT)
- Excl. VAT: €18.50 ÷ 1.09 = €16.97
- Ingredient costs: €4.99
- Food cost: (€4.99 ÷ €16.97) × 100 = 29.4%
- Margin: €16.97 - €4.99 = €11.98
Pizza 40cm:
- Selling price: €26.50 (incl. VAT)
- Excl. VAT: €26.50 ÷ 1.09 = €24.31
- Ingredient costs: €7.79
- Food cost: (€7.79 ÷ €24.31) × 100 = 32.0%
- Margin: €24.31 - €7.79 = €16.52
The family-size format generates €4.54 more margin, but has a higher food cost percentage. Per cm² you earn less.
Optimize your pizza prices for maximum profit
From analyzing actual purchasing data across different restaurant types, you can adjust your pricing strategy:
- Increase the price of large sizes: Family pizza should cost €28.50 for 29.4% food cost
- Promote smaller sizes: These have better margins per cm²
- Offer combo deals: 2 small pizzas can be more profitable than 1 large
⚠️ Note:
Many pizzerias make the mistake of increasing prices linearly with diameter. Always calculate with area - that reflects the actual cost increase.
Measure your pizza profitability systematically
Track for all pizza sizes:
- Actual ingredient costs per cm²
- Food cost percentage per size
- Sales numbers per size per week
- Total margin per size per month
A system like KitchenNmbrs can automate these calculations. You enter your recipes per 100 cm², and the app automatically calculates the cost price for each size. This way you immediately see which pizzas generate the most profit.
💡 Example: Weekly analysis
Sold last week:
- 85x pizza 32cm = €1,017 margin
- 45x pizza 40cm = €743 margin
Conclusion: Small pizzas generate more total profit despite lower quantities
How do you calculate the margin per pizza size? (step by step)
Calculate the area per size
Measure the diameter of your pizzas. Calculate the area using the formula: area = π × (diameter ÷ 2)². A 32cm pizza has an area of 804 cm², a 40cm one has 1,257 cm².
Determine ingredient costs per 100 cm²
Add up all ingredients for your standard recipe and divide by the area. This gives you the costs per 100 cm² pizza. This becomes your baseline for all sizes.
Calculate the cost price per size
Multiply the costs per 100 cm² by the actual area of each size. A 804 cm² pizza thus costs 8.04 times the costs per 100 cm².
Calculate food cost and margin per size
Divide the ingredient costs by the selling price excl. VAT for the food cost percentage. Subtract the ingredient costs from the selling price for the absolute margin in euros.
✨ Pro tip
Calculate margins for your 3 most popular pizza sizes every 2 weeks to spot pricing inefficiencies early. Small diameter changes during prep can shift your cost calculations by 8-12%.
Calculate this yourself?
In the KitchenNmbrs app you can do this in just a few clicks. 7 days free, no credit card.
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Frequently asked questions
Why do I earn less per cm² on large pizzas?
Because the area grows exponentially with the diameter, but prices usually increase linearly. A 40cm pizza has 56% more area than a 32cm one, but often doesn't cost 56% more.
Should I increase the price of family-size pizzas?
Only if your food cost percentage becomes too high. First check if your current prices deliver a food cost below 32%. If not, you can consider adjusting the price.
Can I offer combo deals without losing profit?
Yes, two small pizzas often have a better total margin than one large. Calculate the total area and cost price to determine a profitable combo price.
How often should I check my pizza prices?
Check your food cost per size monthly, especially if suppliers raise prices. Cheese and flour are price-sensitive and directly affect your margins.
📚 Sources consulted
- EU Verordening 852/2004 — Levensmiddelenhygiëne (2004) — Official source
- EU Verordening 853/2004 — Hygiënevoorschriften voor levensmiddelen van dierlijke oorsprong (2004) — Official source
- EU Verordening 1169/2011 — Voedselinformatie aan consumenten (2011) — Official source
- NVWA — Hygiënecode voor de horeca (2024) — Official source
- NVWA — Allergenen in voedsel (2024) — Official source
- Codex Alimentarius — International Food Standards (2024) — Official source
- FSA — Safer food, better business (HACCP) (2024) — Official source
- BVL — Lebensmittelhygiene (HACCP) (2024) — Official source
- Warenwetbesluit Bereiding en behandeling van levensmiddelen (2024) — Official source
- WHO — Foodborne diseases estimates (2024) — Official source
Food Standards Agency (FSA) — https://www.food.gov.uk
The HACCP standards shown in this application are for informational purposes only. KitchenNmbrs does not guarantee that displayed values are current or complete. Always consult the FSA or your local authority for the latest regulations.
Written by
Jeffrey Smit
Founder & CEO of KitchenNmbrs
Jeffrey Smit built KitchenNmbrs from 8 years of hands-on experience as kitchen manager at 1NUL8 Group in Rotterdam. His mission: give every restaurant owner control over food cost.
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