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Events & Catering

Kids Birthday Party Calculator (Compleanno Bambini)

Enter the number of children and their age group to get exact quantities of pizza, mini sandwiches, juice boxes and birthday cake for an Italian-style children's birthday party.

Updated: May 2026
No registration Instant calculation Data stays in browser

Birthday party

🎂 Cake (servings)18
Cake (weight)2.04 kg
🍪 Sweet snacks0.8 kg
🥨 Savory snacks0.6 kg
🧃 Juices/soft drinks3 L
🍽 Disposable plates/cups27
🎁 Party favors10

Standard portion for kids aged 6-9. Younger kids eat less (×0.8), pre-teens more (×1.3). Always add a 10% buffer.

645 persone trovano utile questo calcolatore

Kids Party Quantity Formula

Pizza slices = Children × Slices per Child (by age)
  Ages 3–5:   1.5 slices average
  Ages 6–9:   2.5 slices average
  Ages 10–12: 3.5 slices average

30 cm pizza yields ≈ 6 slices
  Pizzas needed = Total slices / 6

Cake: Children × 100 g average
  24 cm round (3 layers) → 12–14 child portions

Juice: Children × 2.5 boxes × 0.2 L = 0.5 L/child

Example: 15 children ages 6–9
  Pizza: 15 × 2.5 = 37.5 → 38 slices → 7 pizzas (30 cm)
  Mini sandwiches: 15 × 4 = 60 pieces
  Juice: 15 × 2.5 = 37.5 → 38 juice boxes (200 ml)
  Cake: 15 × 100 g = 1.5 kg → 24 cm 2-layer cake

Example: Birthday Party for 25 Children Aged 7–9

  • Party duration: 2.5 hours | Age group: 7–9 years
  • Pizza margherita + pizza wurstel: 25 × 2.5 slices = 62 slices → 11 × 30 cm pizzas
  • Mini tramezzini (prosciutto cotto + tonno): 25 × 4 = 100 mini sandwiches
  • Patatine / snacks: 25 × 30 g = 750 g
  • Juice boxes (200 ml): 25 × 3 = 75 boxes
  • Water: 25 × 500 ml = 12.5 litres
  • Torta di compleanno: 25 × 110 g = 2.75 kg → 28 cm 3-layer themed cake
  • Caramelle / sacchettini ricordo: 25 goodie bags
Risposte rapide

Direct answers

How many pizza slices per child at a birthday party?
Age-appropriate pizza portions: ages 3–5: 1–2 slices (about 150–200 g), ages 6–9: 2–3 slices (200–280 g), ages 10–12: 3–4 slices (280–360 g). For a pizza margherita party, plan a standard 30 cm pizza for every 3–4 small children or 2–3 older children. Always have one or two plain pizzas without toppings for picky eaters.
How much birthday cake per child?
A standard Italian birthday cake (torta di compleanno) slice for children is 80–120 g. A 24 cm round cake (3 layers) yields 12–14 children's portions. For a theme cake, add 20% height for visual impact without needing extra cake. Order or bake one 24 cm cake per 12 children, or use the wedding cake portions calculator for multi-tier party cakes.
How many juice boxes and drinks for a kids party?
Children drink 200–300 ml per hour of active play. For a 2-hour party: plan 2–3 juice boxes (200 ml each) per child. Always have water available (500 ml per child over 2 hours). If serving soft drinks in cups, plan 400–500 ml per child. Italian parties often serve succhi di frutta (Yoga, Zuegg) and acqua naturale/frizzante.
How many mini sandwiches per child?
Mini tramezzini and panini are 30–50 g each. Children eat 3–5 mini sandwiches (120–180 g total) alongside pizza. Common Italian children's party fillings: prosciutto cotto e formaggio, tonno e maionese, nutella (as a sweet option). Prepare a mix to cater to different tastes.
What is a typical Italian children's birthday menu?
Classic Italian compleanno bambini menu: pizza margherita and pizza wurstel (hot dog pizza), mini tramezzini, patatine fritte (crisps/chips), succhi di frutta, acqua, torta di compleanno with candles. For a buffet-style party: add arancini, mini hot dogs in pastry, frittelle, and a dolci table with caramelle (sweets) and biscotti.
How much food for 20 children aged 6–8?
For 20 children (ages 6–8), 2-hour party: Pizza (2.5 slices × 20 = 50 slices → 13 × 30 cm pizzas), Mini sandwiches (4 × 20 = 80 pieces), Crisps/snacks (30 g × 20 = 600 g), Juice boxes (3 × 20 = 60 boxes of 200 ml), Birthday cake (120 g × 20 = 2.4 kg → one large 28 cm 3-layer cake). Always add 10% buffer.
Quick answers

Frequently Asked Questions

How many pizza slices per child at a birthday party?

Age-appropriate pizza portions: ages 3–5: 1–2 slices (about 150–200 g), ages 6–9: 2–3 slices (200–280 g), ages 10–12: 3–4 slices (280–360 g). For a pizza margherita party, plan a standard 30 cm pizza for every 3–4 small children or 2–3 older children. Always have one or two plain pizzas without toppings for picky eaters.

How much birthday cake per child?

A standard Italian birthday cake (torta di compleanno) slice for children is 80–120 g. A 24 cm round cake (3 layers) yields 12–14 children's portions. For a theme cake, add 20% height for visual impact without needing extra cake. Order or bake one 24 cm cake per 12 children, or use the wedding cake portions calculator for multi-tier party cakes.

How many juice boxes and drinks for a kids party?

Children drink 200–300 ml per hour of active play. For a 2-hour party: plan 2–3 juice boxes (200 ml each) per child. Always have water available (500 ml per child over 2 hours). If serving soft drinks in cups, plan 400–500 ml per child. Italian parties often serve succhi di frutta (Yoga, Zuegg) and acqua naturale/frizzante.

How many mini sandwiches per child?

Mini tramezzini and panini are 30–50 g each. Children eat 3–5 mini sandwiches (120–180 g total) alongside pizza. Common Italian children's party fillings: prosciutto cotto e formaggio, tonno e maionese, nutella (as a sweet option). Prepare a mix to cater to different tastes.

What is a typical Italian children's birthday menu?

Classic Italian compleanno bambini menu: pizza margherita and pizza wurstel (hot dog pizza), mini tramezzini, patatine fritte (crisps/chips), succhi di frutta, acqua, torta di compleanno with candles. For a buffet-style party: add arancini, mini hot dogs in pastry, frittelle, and a dolci table with caramelle (sweets) and biscotti.

How much food for 20 children aged 6–8?

For 20 children (ages 6–8), 2-hour party: Pizza (2.5 slices × 20 = 50 slices → 13 × 30 cm pizzas), Mini sandwiches (4 × 20 = 80 pieces), Crisps/snacks (30 g × 20 = 600 g), Juice boxes (3 × 20 = 60 boxes of 200 ml), Birthday cake (120 g × 20 = 2.4 kg → one large 28 cm 3-layer cake). Always add 10% buffer.

Italian version: Calcola compleanno bambini

Birthday party

🎂 Cake (servings)18
Cake (weight)2.04 kg
🍪 Sweet snacks0.8 kg
🥨 Savory snacks0.6 kg
🧃 Juices/soft drinks3 L
🍽 Disposable plates/cups27
🎁 Party favors10

Standard portion for kids aged 6-9. Younger kids eat less (×0.8), pre-teens more (×1.3). Always add a 10% buffer.

645 persone trovano utile questo calcolatore

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