EventSays

Quantities

How much food, drink, seating, sanitation and space you need.

Start here

Event Drink Calculator: How Much Alcohol for Your Party or Weddingcalculator

How much alcohol do I need for my event?

Portable Toilet Calculator for Events (PSAI Standard)calculator

How many portable toilets does my event need?

UK Event Toilet Calculator (Council Ratio Table)calculator

How many toilets does my UK outdoor event need?

Tent Size Calculator: What Size Tent for Your Guest Countcalculator

What size tent do I need for my event?

UK Marquee Size Guide: How Big a Marquee for Your Guestscalculator

What size marquee do I need for my UK event?

Dance Floor Size Calculatorcalculator

How big should my dance floor be?

All quantities decisions

Search, or filter by country — answers differ where rules differ.

  • No matching decisions yet. Try different words — or this is a gap we should build; the demand loop reads zero-result searches.

Quantities & sizing

Catering Portions Per Person: How Much Food to Order

How much food do I need per person for my event?

Cake Size and Servings: What Your Guest Count Actually Needs

What size cake do I need for my guest count?

What Size Generator for an Outdoor Event

What size generator does my outdoor event need?

Rules, permits & risk

How Long Can Buffet Food Sit Out? (US and UK Official Rules)

How long can food safely sit out at my event?

Operations & staffing

How Many Bartenders and Servers Your Event Needscalculator

How many bartenders, servers and crowd staff do I need?

Related areas

WeddingsBirthdays & anniversariesPrivate partiesCorporate eventsFundraisersCommunity events

Every answer here is labeled (official fact, survey, calculated, or our stated rule) with sources and a verification date. How we decide