Free Party & Event Calculators
Plan the perfect party with our free calculators. From drinks and food quantities to budgets and decorations — get instant, accurate estimates for any event.
Drinks & Bar
Calculate how much alcohol, soft drinks, mixers, and ice you need for any party or event.
13 calculators →
Food & Catering
Plan the right amount of food for buffets, BBQs, pizza parties, kids parties, and more.
16 calculators →
Decorations
Plan balloons, bunting, fairy lights, centrepieces, and all the decorations for your celebration.
14 calculators →
Venue & Space
Calculate guest capacity, dance floor size, table layouts, marquee dimensions, and facilities needed.
10 calculators →
Budget & Cost
Plan and track party budgets, per-guest costs, and spending across every category.
10 calculators →
Invitations & Guests
Manage guest lists, RSVPs, seating plans, and invitation quantities for your event.
8 calculators →
Kids Parties
Plan party bags, games, crafts, prizes, and all the supplies for a brilliant kids party.
10 calculators →
Wedding
Plan every detail of your wedding from guest numbers and budgets to flowers, favours, and timelines.
10 calculators →
Seasonal Events
Plan seasonal celebrations including Christmas, Halloween, Bonfire Night, and summer BBQs.
8 calculators →
Tableware
Calculate plates, cutlery, glasses, napkins, and tablecloths for any event or celebration.
8 calculators →
Planning
Event timeline builders, schedule planners and coordination tools for any celebration.
2 calculators →
Entertainment
Plan music, performances, activities and entertainment for your party or event.
3 calculators →
Equipment & Logistics
Plan equipment hire, cleanup supplies, and logistics for your event.
1 calculators →
Reference
Useful party planning reference guides, quantity charts and per-person tables.
4 calculators →
PartyCalcs — Free Party & Event Calculators
PartyCalcs offers 117+ free calculators across 14 categories. Every tool is fast, accurate, and requires no signup. Just enter your values and get instant results.
Browse all 117+ calculators or search above to find exactly what you need.