PartyCalcs.uk
Party Bag Calculator — Contents & Quantities
Calculate party bag contents and quantities for each child at your party.
How We Calculate This
This calculator works out party bag quantities, contents, and total cost.
Formula
- Total bags = children + spares
- Total items = total bags × items per bag
- Cost per bag = (items × cost per item) + bag + sweets (+ optional cake slice), less any bulk discount
- Grand total = total bags × cost per bag
Frequently Asked Questions
A good party bag has 4-6 small items plus a few sweets. Quality over quantity works best. One or two slightly nicer items (small toy, activity book) plus fillers (stickers, bubbles, crayons) and a bag of sweets is the classic formula.
A typical kids party bag costs £2-£5 to fill. Budget bags with sweets and a few small toys come in at £1-£2. Premium bags with branded items or craft kits can cost £5-£10. Most parents aim for £2-£4 per bag, which gives a nice selection without breaking the bank.
Popular fillers include: bubbles, stickers, temporary tattoos, small notepads, crayons, bouncy balls, mini puzzles, and sweets. Avoid very small items for under-3s (choking hazard). Theme-related items are always a hit - dinosaur toys for a dino party, etc.
It is kind to have a few spare bags for siblings who attend. Make 10-15% extra bags to cover siblings, last-minute guests, and any that get dropped or forgotten. Having a couple of spares avoids tears.
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Last updated: February 2026
All calculations are estimates. Adjust quantities based on your guests and event type.