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Children's Party Food Calculator — How Much Food for a Kids' Party

Calculate food quantities for children's parties by age group, party duration, and meal type. Get sandwiches, snacks, cake, fruit, and drink amounts.

Select the age group for your calculation

Select the meal type for your calculation

How We Calculate This

This calculator uses base portion sizes for a standard 2-hour party (aged 5-7), then adjusts quantities based on the age group, party duration, meal format, and spare allowance.

Base portions (per child, 2 hours, age 5-7)

  • Sandwiches: 2 (small triangles or fingers)
  • Crisps: 1 small packet
  • Fruit: 1 portion
  • Cake: 1 slice
  • Drinks: 2 (juice boxes or cups)
  • Savoury snacks: 2 items
  • Sweet treats: 2 items

Age adjustments

  • 2-4 years: 60% of base
  • 5-7 years: 100% (base)
  • 8-10 years: 130% of base
  • 11-13 years: 160% of base

Frequently Asked Questions

Last updated: March 2026

All calculations are based on standard ratios and conversions. Results may vary with specific ingredients, equipment, and conditions.