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

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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

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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?

How Many Tables and Chairs for 100 Guests?

How many tables and chairs do I need for 100 guests?

How Many Appetizers Per Person? The Working Numbers

How many appetizers do I need per person?

How Much BBQ Meat Per Person? (50-Guest Math Included)

How much BBQ meat do I need per person for 50 people?

How Many Soft Drinks and How Much Ice Per Person?

How many soft drinks and how much ice do I need per person for a party?

What Percentage of Wedding Guests Will Decline?

What percentage of invited guests will decline our wedding?

How Much Food for a Baby or Bridal Shower (20–30 Guests)?

How much food do I need for a baby shower with 30 guests?

How Many Trash Cans Do You Need for an Outdoor Event?

How many trash cans do I need for an outdoor event?

How Much Pizza for a Party? (The 3/8 Rule)

How much pizza do I need for a 20-guest party?

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?

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