Birthday Party Cost Calculator

Estimate birthday party costs for kids, teens, and adults. Get a full breakdown of food, cake, decorations, entertainment, goody bags, and venue costs for any party size.

Estimated Total Cost
Cost per Guest
Cake Estimate
Extended More scenarios, charts & detailed breakdown
Total Cost
Food & Drinks
Cake
Decorations
Entertainment
Goody Bags
Professional Full parameters & maximum detail
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Cost Breakdown

Food & Beverages
Cake
Decorations
Entertainment
Invitations (est.)

Total

Total Estimated Cost

How to Use This Calculator

  1. Enter guest count and select party type.
  2. Choose whether to include goody bags.
  3. Use the kids, teen, or adult tabs for itemized breakdowns.
  4. The Professional tab lets you set custom budgets per line item.

Formula

Total = Base (venue) + Guests × per-guest rate + Cake + Decorations + Entertainment + Goody bags.

Home kids party: ~$250 base + $8-10/guest. Venue: ~$600 base + $20/guest.

Example

12 kids, home party, with entertainer and goody bags: $8×12 food + $50 cake + $75 decor + $250 entertainer + $96 goody bags = ~$567 total.

Frequently Asked Questions

  • A home kids party for 10-15 children typically costs $250-500 including cake, food, decorations, and goody bags. A venue party at a trampoline park, bowling alley, or party venue runs $500-1,500 depending on the package.
  • For a kids party: $8-12 per child for pizza, chips, juice boxes, and cake. For an adult party: $25-50 per guest for catered food or $10-15 per person for DIY/potluck. Restaurant private dining typically runs $40-75 per person including a venue fee.
  • A grocery store or Costco cake for 20 guests runs $20-50. A custom bakery cake ranges from $60-150 for a basic 2-tier design. Elaborate fondant or themed cakes can cost $150-400+.
  • Yes — most venues charge a 15-25% premium for Saturday and Sunday bookings compared to weekday parties. Friday evening can be a cost-effective middle ground, especially for teen and adult parties.

Related Calculators

Sources & References (5)
  1. The Bump — Birthday Party Cost Survey — The Bump
  2. KidsParties.com Party Pricing Guide — KidsParties.com
  3. HomeAdvisor Party Cost Data — HomeAdvisor
  4. Eventbrite Event Industry Data — Eventbrite
  5. Care.com Family Cost Reports — Care.com