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Birthday Party Planner

Enter the number of children and adults, food and drink costs per person, venue and extras. The planner works out the party budget and cost per guest, how many pizzas to order from slices per person, and gives a simple four-week timeline. 12 children and 6 adults at 2 and 3 slices each need 42 slices, or 6 eight-slice pizzas.

Your details

Everything else in one figure.

Pizza planner

Results

Party budget

$218.00

$12.11 per guest

Pizzas to order

6

42 slices

Party timeline

  1. 4 weeks before: set the date, budget and guest list; book a venue
  2. 2 weeks before: send invitations and ask about allergies
  3. 1 week before: plan games, order the cake, buy decorations
  4. The day before: confirm numbers, prepare favours, charge the camera
  5. On the day: set up early, keep a first-aid kit handy, and enjoy it

Ask parents about allergies and dietary needs, and label food clearly.

How to use the birthday party planner

  1. Enter the number of children and adults.
  2. Enter the food and drink cost per child and per adult.
  3. Enter the venue or entertainment cost and extras such as cake, decorations and favours.
  4. Use the pizza planner to set slices per child, per adult and per pizza.
  5. Follow the timeline and share the plan with your co-host.

How the planner works

Food = children × cost per child + adults × cost per adult. Party budget = food + venue + extras. Cost per guest = budget ÷ (children + adults). Slices = children × slices per child + adults × slices per adult; pizzas = slices ÷ slices per pizza, rounded up.

Worked examples

Home party. 12 children at 10 each and 6 adults at 8 each: food 168. Add 150 for an entertainer and 50 for cake and favours: 368, about 20.44 per guest.

Pizza. 12 children at 2 slices and 6 adults at 3 slices: 42 slices, so 6 pizzas of 8 slices.

How to interpret the results

The budget helps you decide between options such as a home party or a venue package. Compare the per-guest cost with venue prices, which are often quoted per child.

Tips and common mistakes

  • Invite a manageable number; a common rule is the child’s age plus one, but do what suits you.
  • Plan for a few extra guests such as siblings.
  • Prepare activities for arrival time, games and quiet moments.
  • Keep a first-aid kit and emergency numbers handy.
  • Ask about allergies before ordering food.

Food safety for little guests

For toddlers and preschoolers, cut grapes and other round foods into small pieces, avoid popcorn, nuts, hard sweets and marshmallows, and make sure children sit down to eat with an adult watching. The CDC’s choking hazards page has a fuller list.

Keeping costs down

The biggest savings usually come from the guest list and the venue. A party at home or in a park costs far less than a venue package, and homemade food and a simple cake cut the food bill. Ask whether siblings are coming so you can plan numbers accurately, and set a limit for party favours. The budget updates instantly, so you can try different guest numbers and see the effect.

Limitations

The planner uses your own costs. It doesn’t include local prices or venue minimums.

Frequently asked questions

How do I budget for a kids’ party?

Multiply the number of children and adults by your food and drink cost per person, then add the venue or entertainment and extras such as cake, decorations and favours.

How many pizzas do I need?

Add up the slices: children × slices per child plus adults × slices per adult, then divide by slices per pizza and round up.

When should I send invitations?

Two weeks before is common, giving time for replies and allergy information.

How do I handle food allergies?

Ask parents about allergies and dietary needs when they reply, label food clearly and keep a separate safe option.

Which foods are risky for young children?

For toddlers and young children, the CDC lists choking hazards such as whole grapes, popcorn, nuts, hard candy and marshmallows. Cut round foods into small pieces and supervise eating.

How long should a kids’ party be?

Short parties suit young children; about two hours is plenty for many ages, with time for games, food and cake.

Should parents stay?

For young children, ask parents to stay or arrange enough adults to supervise.

Sources