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All PartyMath calculators and information pages, in one place.

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Pizza Calculator: How Many Pizzas Do You Need? — Calculate pizzas for any guest count using slices per person, slices per pizza and an optional extra allowance. See whole pizzas, spare slices and cost.
Cake Serving Calculator: Portions & Cakes — Work out how many cakes to order from your guest count, portions per guest and the bakery’s servings per cake. Compare total servings and estimated cost.
Party Drinks Calculator: Bottles & Volume — Estimate non-alcoholic drinks for a party by guest count, hours and servings per hour. Convert total volume to bottles and calculate the purchase cost.
Buffet Food Calculator: Total Food Quantity — Estimate total prepared buffet food by guest count, food weight per person and an extra allowance. Split the food into mains, sides and salads.
Party Table Calculator: Tables & Seats — Calculate how many guest tables you need from your guest count and seats per table. See spare seats and estimated table hire cost.
Party Budget Calculator: Cost per Guest — Build a party budget with food, drinks, venue, decorations, other costs and contingency. Compare the estimated total with your spending limit.