Calculate how many pizzas to order for any group size, plus scale pizza dough recipes with baker’s percentages by style and hydration.
Pizza Formula
This calculator works in two modes. The first estimates how many pizzas to order for a group. The second scales a pizza dough recipe using baker’s percentages.
To find how many pizzas to order:
Base Slices = (Adults * Adult Slices) + (Children * Child Slices)
Target Slices = Base Slices * (1 - Reduction) * (1 + Buffer)
Pizzas = ceil( Target Slices / Slices Per Pizza )
- Base Slices is the assumed portion demand before adjustments, not a prediction of what guests will eat. Slice portions must be comparable; changing a pizza’s cut count alone does not change its food area.
- Adult Slices and Child Slices are the slices eaten per person at the chosen appetite level (light, average, hungry, or custom).
- Reduction is a selected planning adjustment for other food (0, 0.15, or 0.25), not a validated appetite model.
- Buffer is the extra fraction added so you do not run short.
- Slices Per Pizza is the cut count for the size you select, and the result is always rounded up to a whole pizza.
To scale a dough batch:
Total Dough = Number of Pizzas * Dough Ball Weight
Flour = Total Dough * 100 / (100 + Hydration + Salt + Yeast + Oil + Sugar)
Ingredient Weight = Flour * Ingredient Percent / 100
- Total Dough is the combined weight of every dough ball in the batch.
- Hydration, Salt, Yeast, Oil, and Sugar are baker’s percentages, each measured relative to the flour weight.
- Flour is always the 100% basis, so its weight is the total divided by the sum of all percentages.
- Ingredient Weight is each component scaled from the flour weight, and each illustrative style preset uses its listed percentages. Choose Custom to enter a different formula.
How Many Pizzas to Order by Group Size
The table assumes adults only, eight equal portions per pizza, no other-food reduction and no buffer. Its average column uses three portions per adult; its hungry column uses four. These are planning assumptions. Set the calculator’s buffer to 0% to reproduce the table.
| People | Average appetite | Hungry / main meal |
|---|---|---|
| 2 | 1 pizza | 1 pizza |
| 4 | 2 pizzas | 2 pizzas |
| 6 | 3 pizzas | 3 pizzas |
| 10 | 4 pizzas | 5 pizzas |
| 15 | 6 pizzas | 8 pizzas |
| 20 | 8 pizzas | 10 pizzas |
For dough, the table lists this calculator’s illustrative style formulas, rather than universal or certified style standards. Flour is always 100%. Adjust yeast for its type, fermentation time and temperature; the calculator scales weights and does not select a fermentation schedule.
| Style | Hydration | Salt | Yeast | Oil | Sugar |
|---|---|---|---|---|---|
| Neapolitan | 62% | 2.8% | 0.2% | 0% | 0% |
| New York | 65% | 2.5% | 0.5% | 2% | 1% |
| Pan | 70% | 2.5% | 0.7% | 3% | 1% |
Example Problems
Example 1: Ordering for a group. You have 10 adults and 5 children with average appetites, and pizza is the main meal. Base slices are (10 * 3) + (5 * 2) = 40 slices. With no reduction and a 10% buffer, target slices are 40 * 1.10 = 44. Ordering medium pizzas cut into 8 slices gives ceil(44 / 8) = 6 pizzas, which is 48 slices.
Example 2: Scaling dough. You want 4 New York-style dough balls at 250 g each, so total dough is 4 * 250 = 1000 g. The percentages sum to 100 + 65 + 2.5 + 0.5 + 2 + 1 = 171. Flour is 1000 * 100 / 171 = 584.8 g. Water is 584.8 * 0.65 = 380.1 g, salt is 584.8 * 0.025 = 14.6 g, and so on for the remaining ingredients.
Frequently Asked Questions
How many slices should I plan per person? The calculator’s average preset assumes three comparable slices per adult and two per child; light and hungry presets change those assumptions. They are estimates, not dietary guidance. Use custom portions based on your guests, pizza size and other food.
Why does the result always round up? You cannot order a fraction of a pizza, so the calculator rounds up to the next whole pizza. Add an extra buffer percentage when you want a planning margin. A blank buffer means 0%; the calculation still rounds the final order up to whole pizzas.
What does hydration mean in the dough mode? Hydration is the weight of water as a percentage of the flour weight. A 65% hydration dough uses 65 g of water for every 100 g of flour. With the same flour and formula, higher hydration generally makes dough wetter. Handling and crumb also depend on flour, mixing, fermentation and baking; hydration alone does not guarantee a particular result.
