Birthday Party Food Calculator
Birthday parties should be fun, not stressful. Whether you're planning a kids' party with pizza and cake or an adult celebration with a full spread, getting the food quantities right ensures everyone leaves happy and satisfied.
Quick Estimates for 20 Guests
Here's what you'll need if serving these foods together at your birthday party:
Estimated total cost: $198 - $442
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Pizzas
6 large pizzas
Est. $72-$120
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Hot Dogs
28 hot dogs
Est. $28-$70
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Cake Slices
14 slices
Est. $28-$70
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Cupcakes
14 cupcakes
Est. $21-$56
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Chip Servings
28 oz
Est. $7-$14
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Drinks
28 drinks
Est. $14-$56
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Nacho Servings
14 servings
Est. $28-$56
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Planning Timeline
1
2 weeks before: Send invitations, start planning menu
2
1 week before: Order cake, confirm RSVPs, finalize food list
3
2-3 days before: Shop for supplies, non-perishables
4
1 day before: Prep decorations, set up party area
5
Day of party: Pick up cake, order pizza, prep cold foods
💡 Pro Tips
- • For kids' parties, plan for smaller portions - kids eat less than you think
- • Always have a plain cheese pizza option for picky eaters
- • Sheet cakes are more economical than round cakes for large parties
Birthday Party Planning Tips
- Consider dietary restrictions and allergies of guests
- Have activities to spread out eating time
- Plan dessert timing around candle-blowing
- Order 10-15% more food for unexpected guests
- Set up a separate kids' table with kid-friendly portions
- Label foods for common allergens (nuts, dairy, gluten)
Food Safety Resources:
Frequently Asked Questions
How much pizza do I need for a birthday party?
For a kids' birthday party, plan for 2 slices per child. For adults, plan for 3 slices per person. A large pizza typically has 8 slices, so for 20 kids, you'd need about 5 large pizzas.
How much cake for a birthday party?
A standard 9-inch round cake serves 12 people. For larger parties, consider a half-sheet cake (serves 24-30) or full-sheet cake (serves 48-60). Always order 10% extra for display and seconds.
What time should I serve food at a birthday party?
For a 2-3 hour party, serve the main food about 30-45 minutes after the party starts. This gives guests time to arrive and kids time to play. Serve cake about 30 minutes before the party ends.