Disclaimer

Last updated: September 2026. Please read this page carefully before using our calculators.

Educational information only

All content on PartyMath — calculators, articles, tables, and examples — is published for general educational purposes. It is not catering or event advice and is not a substitute for a qualified professional. We are not professional caterer or event planners, and no client or advisory relationship is created by your use of this Site.

Our calculators apply widely used catering quantity rules — drinks per hour, food weight per guest, ice per cooler-hour. Real events vary with guest mix, weather, menu richness, and how long the cheese plate sits next to the dance floor.

If you serve alcohol, you are also responsible for it: plan non-alcoholic options in equal measure, feed your guests, watch for over-consumption, and arrange safe rides. Quantities here are hospitality estimates, not permission slips.

Accuracy of calculations

We implement well-known, publicly documented formulas (see the methodology section on each calculator page and standard catering-industry quantity guidance as applicable). Even correctly implemented formulas produce estimates that depend on your inputs and assumptions. Real-world outcomes vary. Do not rely on a single web tool for a consequential decision.

Advertising disclosure

PartyMath is funded by display advertising served through Google AdSense. Advertisers have no influence over our content, formulas, or editorial choices, and placement of an ad is not an endorsement.

Errors and corrections

If you spot an error, please email hello@partymath.com with the inputs you used. Verified corrections are published promptly.