Count teenagers as adults
The calculator’s child portion is intended for younger children. Put teenagers in the adult field unless you know they will eat lightly.
Free pizza tool
Pizza party calculator
This Pizza party calculator turns a mixed guest list into a sensible order. Set the number of adults and children, how the pizza will be served and how many slices come in each box.
Plan the orderYour table
Set the headcount
Your order
Order 7 pizzas
7pizzas with 8 slices each
- Guests
- 20
- Planned portions
- 48 slices
- After appetite and cushion
- 53 slices
- Order provides
- 56 slices
3 spare slices. Pizza shops cut differently, so confirm the slice count before placing the order.
How it works
A portion estimate, rounded up to whole pizzas.
The calculator starts with three slices per adult or teenager and two per child for a main meal. If pizza sits alongside other substantial food, the second preset changes those portions to two and one. You can then set either portion to match your guests.
Appetite then adjusts the slice total: light is 20% lower, standard leaves it unchanged and hungry is 25% higher. The optional cushion adds another 10%. The final number always rounds up to a complete pizza.
Before you order
Check the cut, then check the crowd.
Pizza diameter does not reliably tell you the number of slices. Ask the shop how each size is cut and use that number in the calculator.
Treat dietary pizzas separately
A gluten-free, vegan or allergen-managed pizza may only feed the guests who requested it. Reserve those boxes before dividing the rest of the order.
Use the cushion deliberately
Keep it for uncertain appetites, long events or irregular cuts. Turn it off when you know the group and want fewer leftovers.
Quick reference
How many pizzas for 1 to 100 people?
1–25 people
How many pizzas for 1 person?
For 1 person, order 1 eight-slice pizza. The example split is 1 child and 0 adults; it needs 3 planned slices with the cushion and provides 8.
How many pizzas for 2 people?
For 2 people, order 1 eight-slice pizza. The example split is 1 child and 1 adult; it needs 6 planned slices with the cushion and provides 8.
How many pizzas for 3 people?
For 3 people, order 1 eight-slice pizza. The example split is 2 children and 1 adult; it needs 8 planned slices with the cushion and provides 8.
How many pizzas for 4 people?
For 4 people, order 2 eight-slice pizzas. The example split is 2 children and 2 adults; it needs 11 planned slices with the cushion and provides 16.
How many pizzas for 5 people?
For 5 people, order 2 eight-slice pizzas. The example split is 3 children and 2 adults; it needs 14 planned slices with the cushion and provides 16.
How many pizzas for 6 people?
For 6 people, order 2 eight-slice pizzas. The example split is 4 children and 2 adults; it needs 16 planned slices with the cushion and provides 16.
How many pizzas for 7 people?
For 7 people, order 3 eight-slice pizzas. The example split is 4 children and 3 adults; it needs 19 planned slices with the cushion and provides 24.
How many pizzas for 8 people?
For 8 people, order 3 eight-slice pizzas. The example split is 5 children and 3 adults; it needs 21 planned slices with the cushion and provides 24.
How many pizzas for 9 people?
For 9 people, order 4 eight-slice pizzas. The example split is 5 children and 4 adults; it needs 25 planned slices with the cushion and provides 32.
How many pizzas for 10 people?
For 10 people, order 4 eight-slice pizzas. The example split is 6 children and 4 adults; it needs 27 planned slices with the cushion and provides 32.
How many pizzas for 11 people?
For 11 people, order 4 eight-slice pizzas. The example split is 7 children and 4 adults; it needs 29 planned slices with the cushion and provides 32.
How many pizzas for 12 people?
For 12 people, order 4 eight-slice pizzas. The example split is 7 children and 5 adults; it needs 32 planned slices with the cushion and provides 32.
How many pizzas for 13 people?
For 13 people, order 5 eight-slice pizzas. The example split is 8 children and 5 adults; it needs 35 planned slices with the cushion and provides 40.
How many pizzas for 14 people?
For 14 people, order 5 eight-slice pizzas. The example split is 8 children and 6 adults; it needs 38 planned slices with the cushion and provides 40.
How many pizzas for 15 people?
For 15 people, order 5 eight-slice pizzas. The example split is 9 children and 6 adults; it needs 40 planned slices with the cushion and provides 40.
How many pizzas for 16 people?
For 16 people, order 6 eight-slice pizzas. The example split is 10 children and 6 adults; it needs 42 planned slices with the cushion and provides 48.
How many pizzas for 17 people?
For 17 people, order 6 eight-slice pizzas. The example split is 10 children and 7 adults; it needs 46 planned slices with the cushion and provides 48.
How many pizzas for 18 people?
For 18 people, order 6 eight-slice pizzas. The example split is 11 children and 7 adults; it needs 48 planned slices with the cushion and provides 48.
How many pizzas for 19 people?
For 19 people, order 7 eight-slice pizzas. The example split is 11 children and 8 adults; it needs 51 planned slices with the cushion and provides 56.
How many pizzas for 20 people?
For 20 people, order 7 eight-slice pizzas. The example split is 12 children and 8 adults; it needs 53 planned slices with the cushion and provides 56.
How many pizzas for 21 people?
For 21 people, order 7 eight-slice pizzas. The example split is 13 children and 8 adults; it needs 55 planned slices with the cushion and provides 56.
How many pizzas for 22 people?
For 22 people, order 8 eight-slice pizzas. The example split is 13 children and 9 adults; it needs 59 planned slices with the cushion and provides 64.
How many pizzas for 23 people?
For 23 people, order 8 eight-slice pizzas. The example split is 14 children and 9 adults; it needs 61 planned slices with the cushion and provides 64.
How many pizzas for 24 people?
For 24 people, order 8 eight-slice pizzas. The example split is 14 children and 10 adults; it needs 64 planned slices with the cushion and provides 64.
How many pizzas for 25 people?
For 25 people, order 9 eight-slice pizzas. The example split is 15 children and 10 adults; it needs 66 planned slices with the cushion and provides 72.
26–50 people
How many pizzas for 26 people?
For 26 people, order 9 eight-slice pizzas. The example split is 16 children and 10 adults; it needs 69 planned slices with the cushion and provides 72.
How many pizzas for 27 people?
For 27 people, order 9 eight-slice pizzas. The example split is 16 children and 11 adults; it needs 72 planned slices with the cushion and provides 72.
How many pizzas for 28 people?
For 28 people, order 10 eight-slice pizzas. The example split is 17 children and 11 adults; it needs 74 planned slices with the cushion and provides 80.
How many pizzas for 29 people?
For 29 people, order 10 eight-slice pizzas. The example split is 17 children and 12 adults; it needs 77 planned slices with the cushion and provides 80.
How many pizzas for 30 people?
For 30 people, order 10 eight-slice pizzas. The example split is 18 children and 12 adults; it needs 80 planned slices with the cushion and provides 80.
How many pizzas for 31 people?
For 31 people, order 11 eight-slice pizzas. The example split is 19 children and 12 adults; it needs 82 planned slices with the cushion and provides 88.
How many pizzas for 32 people?
For 32 people, order 11 eight-slice pizzas. The example split is 19 children and 13 adults; it needs 85 planned slices with the cushion and provides 88.
How many pizzas for 33 people?
For 33 people, order 11 eight-slice pizzas. The example split is 20 children and 13 adults; it needs 87 planned slices with the cushion and provides 88.
How many pizzas for 34 people?
For 34 people, order 12 eight-slice pizzas. The example split is 20 children and 14 adults; it needs 91 planned slices with the cushion and provides 96.
How many pizzas for 35 people?
For 35 people, order 12 eight-slice pizzas. The example split is 21 children and 14 adults; it needs 93 planned slices with the cushion and provides 96.
How many pizzas for 36 people?
For 36 people, order 12 eight-slice pizzas. The example split is 22 children and 14 adults; it needs 95 planned slices with the cushion and provides 96.
How many pizzas for 37 people?
For 37 people, order 13 eight-slice pizzas. The example split is 22 children and 15 adults; it needs 98 planned slices with the cushion and provides 104.
How many pizzas for 38 people?
For 38 people, order 13 eight-slice pizzas. The example split is 23 children and 15 adults; it needs 101 planned slices with the cushion and provides 104.
How many pizzas for 39 people?
For 39 people, order 13 eight-slice pizzas. The example split is 23 children and 16 adults; it needs 104 planned slices with the cushion and provides 104.
How many pizzas for 40 people?
For 40 people, order 14 eight-slice pizzas. The example split is 24 children and 16 adults; it needs 106 planned slices with the cushion and provides 112.
How many pizzas for 41 people?
For 41 people, order 14 eight-slice pizzas. The example split is 25 children and 16 adults; it needs 108 planned slices with the cushion and provides 112.
How many pizzas for 42 people?
For 42 people, order 14 eight-slice pizzas. The example split is 25 children and 17 adults; it needs 112 planned slices with the cushion and provides 112.
How many pizzas for 43 people?
For 43 people, order 15 eight-slice pizzas. The example split is 26 children and 17 adults; it needs 114 planned slices with the cushion and provides 120.
How many pizzas for 44 people?
For 44 people, order 15 eight-slice pizzas. The example split is 26 children and 18 adults; it needs 117 planned slices with the cushion and provides 120.
How many pizzas for 45 people?
For 45 people, order 15 eight-slice pizzas. The example split is 27 children and 18 adults; it needs 119 planned slices with the cushion and provides 120.
How many pizzas for 46 people?
For 46 people, order 16 eight-slice pizzas. The example split is 28 children and 18 adults; it needs 121 planned slices with the cushion and provides 128.
How many pizzas for 47 people?
For 47 people, order 16 eight-slice pizzas. The example split is 28 children and 19 adults; it needs 125 planned slices with the cushion and provides 128.
How many pizzas for 48 people?
For 48 people, order 16 eight-slice pizzas. The example split is 29 children and 19 adults; it needs 127 planned slices with the cushion and provides 128.
How many pizzas for 49 people?
For 49 people, order 17 eight-slice pizzas. The example split is 29 children and 20 adults; it needs 130 planned slices with the cushion and provides 136.
How many pizzas for 50 people?
For 50 people, order 17 eight-slice pizzas. The example split is 30 children and 20 adults; it needs 132 planned slices with the cushion and provides 136.
51–75 people
How many pizzas for 51 people?
For 51 people, order 17 eight-slice pizzas. The example split is 31 children and 20 adults; it needs 135 planned slices with the cushion and provides 136.
How many pizzas for 52 people?
For 52 people, order 18 eight-slice pizzas. The example split is 31 children and 21 adults; it needs 138 planned slices with the cushion and provides 144.
How many pizzas for 53 people?
For 53 people, order 18 eight-slice pizzas. The example split is 32 children and 21 adults; it needs 140 planned slices with the cushion and provides 144.
How many pizzas for 54 people?
For 54 people, order 18 eight-slice pizzas. The example split is 32 children and 22 adults; it needs 143 planned slices with the cushion and provides 144.
How many pizzas for 55 people?
For 55 people, order 19 eight-slice pizzas. The example split is 33 children and 22 adults; it needs 146 planned slices with the cushion and provides 152.
How many pizzas for 56 people?
For 56 people, order 19 eight-slice pizzas. The example split is 34 children and 22 adults; it needs 148 planned slices with the cushion and provides 152.
How many pizzas for 57 people?
For 57 people, order 19 eight-slice pizzas. The example split is 34 children and 23 adults; it needs 151 planned slices with the cushion and provides 152.
How many pizzas for 58 people?
For 58 people, order 20 eight-slice pizzas. The example split is 35 children and 23 adults; it needs 153 planned slices with the cushion and provides 160.
How many pizzas for 59 people?
For 59 people, order 20 eight-slice pizzas. The example split is 35 children and 24 adults; it needs 157 planned slices with the cushion and provides 160.
How many pizzas for 60 people?
For 60 people, order 20 eight-slice pizzas. The example split is 36 children and 24 adults; it needs 159 planned slices with the cushion and provides 160.
How many pizzas for 61 people?
For 61 people, order 21 eight-slice pizzas. The example split is 37 children and 24 adults; it needs 161 planned slices with the cushion and provides 168.
How many pizzas for 62 people?
For 62 people, order 21 eight-slice pizzas. The example split is 37 children and 25 adults; it needs 164 planned slices with the cushion and provides 168.
How many pizzas for 63 people?
For 63 people, order 21 eight-slice pizzas. The example split is 38 children and 25 adults; it needs 167 planned slices with the cushion and provides 168.
How many pizzas for 64 people?
For 64 people, order 22 eight-slice pizzas. The example split is 38 children and 26 adults; it needs 170 planned slices with the cushion and provides 176.
How many pizzas for 65 people?
For 65 people, order 22 eight-slice pizzas. The example split is 39 children and 26 adults; it needs 172 planned slices with the cushion and provides 176.
How many pizzas for 66 people?
For 66 people, order 22 eight-slice pizzas. The example split is 40 children and 26 adults; it needs 174 planned slices with the cushion and provides 176.
How many pizzas for 67 people?
For 67 people, order 23 eight-slice pizzas. The example split is 40 children and 27 adults; it needs 178 planned slices with the cushion and provides 184.
How many pizzas for 68 people?
For 68 people, order 23 eight-slice pizzas. The example split is 41 children and 27 adults; it needs 180 planned slices with the cushion and provides 184.
How many pizzas for 69 people?
For 69 people, order 23 eight-slice pizzas. The example split is 41 children and 28 adults; it needs 183 planned slices with the cushion and provides 184.
How many pizzas for 70 people?
For 70 people, order 24 eight-slice pizzas. The example split is 42 children and 28 adults; it needs 185 planned slices with the cushion and provides 192.
How many pizzas for 71 people?
For 71 people, order 24 eight-slice pizzas. The example split is 43 children and 28 adults; it needs 187 planned slices with the cushion and provides 192.
How many pizzas for 72 people?
For 72 people, order 24 eight-slice pizzas. The example split is 43 children and 29 adults; it needs 191 planned slices with the cushion and provides 192.
How many pizzas for 73 people?
For 73 people, order 25 eight-slice pizzas. The example split is 44 children and 29 adults; it needs 193 planned slices with the cushion and provides 200.
How many pizzas for 74 people?
For 74 people, order 25 eight-slice pizzas. The example split is 44 children and 30 adults; it needs 196 planned slices with the cushion and provides 200.
How many pizzas for 75 people?
For 75 people, order 25 eight-slice pizzas. The example split is 45 children and 30 adults; it needs 198 planned slices with the cushion and provides 200.
76–100 people
How many pizzas for 76 people?
For 76 people, order 26 eight-slice pizzas. The example split is 46 children and 30 adults; it needs 201 planned slices with the cushion and provides 208.
How many pizzas for 77 people?
For 77 people, order 26 eight-slice pizzas. The example split is 46 children and 31 adults; it needs 204 planned slices with the cushion and provides 208.
How many pizzas for 78 people?
For 78 people, order 26 eight-slice pizzas. The example split is 47 children and 31 adults; it needs 206 planned slices with the cushion and provides 208.
How many pizzas for 79 people?
For 79 people, order 27 eight-slice pizzas. The example split is 47 children and 32 adults; it needs 209 planned slices with the cushion and provides 216.
How many pizzas for 80 people?
For 80 people, order 27 eight-slice pizzas. The example split is 48 children and 32 adults; it needs 212 planned slices with the cushion and provides 216.
How many pizzas for 81 people?
For 81 people, order 27 eight-slice pizzas. The example split is 49 children and 32 adults; it needs 214 planned slices with the cushion and provides 216.
How many pizzas for 82 people?
For 82 people, order 28 eight-slice pizzas. The example split is 49 children and 33 adults; it needs 217 planned slices with the cushion and provides 224.
How many pizzas for 83 people?
For 83 people, order 28 eight-slice pizzas. The example split is 50 children and 33 adults; it needs 219 planned slices with the cushion and provides 224.
How many pizzas for 84 people?
For 84 people, order 28 eight-slice pizzas. The example split is 50 children and 34 adults; it needs 223 planned slices with the cushion and provides 224.
How many pizzas for 85 people?
For 85 people, order 29 eight-slice pizzas. The example split is 51 children and 34 adults; it needs 225 planned slices with the cushion and provides 232.
How many pizzas for 86 people?
For 86 people, order 29 eight-slice pizzas. The example split is 52 children and 34 adults; it needs 227 planned slices with the cushion and provides 232.
How many pizzas for 87 people?
For 87 people, order 29 eight-slice pizzas. The example split is 52 children and 35 adults; it needs 230 planned slices with the cushion and provides 232.
How many pizzas for 88 people?
For 88 people, order 30 eight-slice pizzas. The example split is 53 children and 35 adults; it needs 233 planned slices with the cushion and provides 240.
How many pizzas for 89 people?
For 89 people, order 30 eight-slice pizzas. The example split is 53 children and 36 adults; it needs 236 planned slices with the cushion and provides 240.
How many pizzas for 90 people?
For 90 people, order 30 eight-slice pizzas. The example split is 54 children and 36 adults; it needs 238 planned slices with the cushion and provides 240.
How many pizzas for 91 people?
For 91 people, order 30 eight-slice pizzas. The example split is 55 children and 36 adults; it needs 240 planned slices with the cushion and provides 240.
How many pizzas for 92 people?
For 92 people, order 31 eight-slice pizzas. The example split is 55 children and 37 adults; it needs 244 planned slices with the cushion and provides 248.
How many pizzas for 93 people?
For 93 people, order 31 eight-slice pizzas. The example split is 56 children and 37 adults; it needs 246 planned slices with the cushion and provides 248.
How many pizzas for 94 people?
For 94 people, order 32 eight-slice pizzas. The example split is 56 children and 38 adults; it needs 249 planned slices with the cushion and provides 256.
How many pizzas for 95 people?
For 95 people, order 32 eight-slice pizzas. The example split is 57 children and 38 adults; it needs 251 planned slices with the cushion and provides 256.
How many pizzas for 96 people?
For 96 people, order 32 eight-slice pizzas. The example split is 58 children and 38 adults; it needs 253 planned slices with the cushion and provides 256.
How many pizzas for 97 people?
For 97 people, order 33 eight-slice pizzas. The example split is 58 children and 39 adults; it needs 257 planned slices with the cushion and provides 264.
How many pizzas for 98 people?
For 98 people, order 33 eight-slice pizzas. The example split is 59 children and 39 adults; it needs 259 planned slices with the cushion and provides 264.
How many pizzas for 99 people?
For 99 people, order 33 eight-slice pizzas. The example split is 59 children and 40 adults; it needs 262 planned slices with the cushion and provides 264.
How many pizzas for 100 people?
For 100 people, order 33 eight-slice pizzas. The example split is 60 children and 40 adults; it needs 264 planned slices with the cushion and provides 264.
How many slices of pizza per person?
The calculator starts with three slices per adult or teenager and two per younger child when pizza is the main meal. When pizza is one part of a larger spread, the second preset uses two slices per adult and one per child. Change either figure when you know your guests will eat more or less. These are planning assumptions, not measured guarantees.
slices per adult or teenager
slices per younger child
adult and child portions
Your knowledge of the group should beat the default. Select “Hungry crowd” for a long event, a late meal or guests likely to return for several helpings. Use “Light” when the pizzas follow substantial snacks or sit beside other filling dishes.
Six, eight, ten or twelve slices per pizza?
Pizza names are poor units of measurement. One shop’s large pizza may be cut into eight slices while another uses ten or twelve. Ask for the slice count, then calculate the number of complete pizzas needed to cover your planned portions.
| Slices needed | 6 per pizza | 8 per pizza | 10 per pizza | 12 per pizza |
|---|---|---|---|---|
| 30 | 5 | 4 | 3 | 3 |
| 45 | 8 | 6 | 5 | 4 |
| 60 | 10 | 8 | 6 | 5 |
| 90 | 15 | 12 | 9 | 8 |
This comparison is about cuts, not value or food area. A six-slice pizza could be wider than a twelve-slice pizza. Compare diameter and price directly with the shop if those factors affect the order.
Plan the boxes
How many pizzas for a children’s party?
Start with the children’s main-meal setting of two slices each. Ten children need 20 planned slices; with a 10% cushion, that becomes 22 slices, or three pizzas cut into eight. Twenty children become 44 slices after the cushion, which rounds up to six eight-slice pizzas.
Move teenagers into the adult field. If parents or carers are staying to eat, count them too. The most common cause of a misleading result is entering the invitation count instead of everyone who will take a slice.
How should you split the toppings?
Do not let a percentage formula overrule the guest list. Ask about allergies and dietary requirements before ordering, then reserve those pizzas first. Keep them clearly identified and ask the shop about preparation and cross-contact where an allergy is involved.
For the remaining boxes, use what people have actually requested. If you do not have preferences, a restrained mix of familiar and vegetarian choices is easier to manage than making every pizza different. Half-and-half pizzas can add variety, but only if the shop offers them and both toppings suit the same diners.
When should you place a large pizza order?
Ask the chosen shop, because capacity and delivery areas differ. A multi-pizza order may need several oven loads, and a delivery estimate intended for one or two boxes may not apply. Confirm the number of pizzas, cut, toppings, dietary labels, collection or delivery time and the name attached to the order.
For collection, bring a flat, clear space in the vehicle and avoid stacking anything on the boxes. For delivery, allow room in the schedule rather than timing the meal to the minute.
Ordering pizza or making it yourself?
Ordering removes oven capacity and dough preparation from the day. Making pizzas gives you control over size and toppings, but the serving rate is limited by how many pizzas your oven can bake at once. A home pizza oven that cooks one pizza at a time still needs a plan for shaping, topping and serving a group.
Useful answers
Party pizza questions
How many pizzas do I need for 10 people?
Ten adults or teenagers need five eight-slice pizzas using the main-meal portions and 10% cushion. Ten younger children need three. A mixed group falls between those figures; enter the age split for a closer estimate.
How many pizzas do I need for 20 people?
For 12 children and eight adults eating pizza as the main meal, the standard portions total 48 slices. With the 10% cushion, that becomes 53 slices, or seven pizzas cut into eight slices each.
How many pizzas do I need for 30 people?
Thirty adults or teenagers need thirteen eight-slice pizzas with the standard main-meal portions and 10% cushion. Thirty younger children need nine. Use the calculator for a mixed group or a different cut.
How many pizzas do I need for 50 people?
Fifty adults or teenagers need twenty-one eight-slice pizzas with the standard main-meal portions and 10% cushion. Fifty younger children need fourteen. Confirm a large order directly with the shop.
Should I count children differently?
Yes. This tool starts younger children at two slices for a main meal and one alongside other food. Count teenagers as adults, then use the appetite setting for the group as a whole.
Does pizza size matter?
The slice count matters to this calculation. A shop might cut two pizzas of the same diameter into different numbers of slices, so confirm the cut rather than relying on labels such as medium or large.
What does the 10% cushion cover?
It gives a little room for second helpings and uneven portions. It is not a guarantee: a hungry crowd or a pizza-only meal may need the hungry setting as well.