Question 1

How much alcohol do you need for a party of 50?

Accepted Answer

For 50 guests with about 20 adults, plan for roughly 1 drink per adult per hour for the first 2 hours, then 0.5 drinks per hour after that. For a 3-hour party, that is about 50 beers or glasses of wine for the adult guests. Buy a mix of beer, wine, and a non-alcoholic option so every guest has a choice.

Question 2

How many drinks per person at a party?

Accepted Answer

Plan for 2-3 drinks per person for a 2-hour party. Adults consume about 1.5 drinks per hour, while kids drink about 1 cup per hour. For a typical birthday party lasting 2-3 hours, budget 4-5 drinks per adult and 2-3 per child, including water, soda, and juice.

Question 3

How many juice boxes do I need for a kids party?

Accepted Answer

Plan for 2 juice boxes per child plus water. For a party of 20 kids, buy at least 40 juice boxes. Kids also drink water, so have 1 water bottle per child per hour of party time. For a 2-hour party with 20 kids, that is 40 juice boxes plus 40 water bottles.

Question 4

How much water do you need for an outdoor party?

Accepted Answer

For an outdoor party, plan 0.5 water bottles per person per hour in mild weather and add 30% more in hot weather. A 3-hour outdoor party for 30 guests in the heat needs about 60 water bottles. Always err on the side of more water — it is cheap and guests always appreciate it.

Question 5

How many cans of soda for a birthday party?

Accepted Answer

Plan for 1 can of soda per child per hour and 1.5 cans per adult per hour. For a 2-hour party with 15 kids and 10 adults, you need about 30 cans for kids and 30 for adults — 60 cans total. Buy a variety: cola, lemon-lime, and one fun flavor like orange or grape.

Question 6

What is the cheapest way to buy drinks for a party?

Accepted Answer

Buy in bulk from warehouse stores like Costco or Sam's Club to save 40-60%. A 40-pack of water bottles costs $4-6 (versus $8-12 at grocery stores). Juice boxes come in 40-packs for about $10. For soda, buy 2-liter bottles instead of cans if you have cups — a 2-liter serves about 6 cups and costs $1-2.

Question 7

How many cans of soda for 200 guests?

Accepted Answer

For 200 guests at a 4-hour party, plan about 800 cans of soda — roughly 134 two-liter bottles or 34 cases of 24 cans. According to Party Genius's drink calculator, that is about 1 can per guest per hour averaged across kids and adults. Mix three flavors (cola, lemon-lime, and one fun pick like orange or root beer). Buying from warehouse stores like Costco saves 40-60% versus grocery. Plan 200 pounds of ice total for cold service.

Question 8

How many 2-liter bottles of soda for 100 people?

Accepted Answer

For 100 guests at a 2-3 hour party, plan about 17 two-liter bottles of soda — that covers roughly 100 cans-worth at 6 servings per bottle. According to Party Genius's drink calculator, adults consume 1.5 cans per hour and kids 1 per hour. Buy a mix of cola, lemon-lime, and one fun flavor. If you have cups, two-liters save 40-60% over cans from warehouse stores.

Question 9

Do you need more drinks for an outdoor party in hot weather?

Accepted Answer

Yes. Hot weather increases drink consumption by about 30%. The Party Genius calculator applies a 1.3× multiplier when you select "outdoor-hot." A 3-hour outdoor party for 30 guests in the heat needs about 60 water bottles instead of 45. Fill coolers with ice, keep drinks in the shade, and freeze a few water bottles the night before to double as ice packs.

Question 10

How much ice is needed for a birthday party?

Accepted Answer

Plan about 1 pound of ice per guest as a starting baseline — roughly 40% for drink cups (cocktail ice) and 60% for chilling bottles, cans, and food in coolers. For a 50-guest party, that means 50 pounds total. In hot weather or for long parties (4+ hours), bump to 1.5 lbs per guest. A 20-lb bag of ice runs $4-7 at most grocery stores.

Question 11

How are drinks calculated for a kid's birthday party?

Accepted Answer

Party Genius's calculator uses these defaults for kids: 2 juice boxes per child (flat), 1 soda can per child per hour, and 0.5 water bottles per child per hour. For a 2-hour party with 15 kids, that is 30 juice boxes, 30 soda cans, and 15 water bottles. Skip alcohol entirely. Set up a self-serve drink station at kid height so children can grab their own.

Guests	Water	Juice	Soda	Cost
15 (9 kids, 6 adults)	15 bottles	18 boxes	27 cans	$18–36
25 (15 kids, 10 adults)	25 bottles	30 boxes	45 cans	$30–60
50 (30 kids, 20 adults)	50 bottles	60 boxes	90 cans	$60–120
75 (45 kids, 30 adults)	75 bottles	90 boxes	135 cans	$90–180
100 (60 kids, 40 adults)	100 bottles	120 boxes	180 cans	$120–240
200 (120 kids, 80 adults)	200 bottles	240 boxes	360 cans	$240–480

How Much Soda for a Party? 10-200 Guests

Quick Answer: Drinks You Need for a Party

Table A — Drinks for a Party by Guest Count

Table B — Drink Mix by Audience (per 100 drinks)

Table C — Soda Pack Equivalents

Table D — Ice Quantity by Guest Count

Table E — Cases & 2-Liters of Soda by Guest Count

Pro Tip

Plan Your Complete Drink Station

What to Plan Next

See a Complete Party Plan

Frequently Asked Questions

Get the Party Drinks Shopping Guide

Related Party Planning Guides

Audience	Water	Soda	Juice	Adult bev
Kids party (under 12)	40	30	30	0
Mixed (kids + adults)	35	30	20	15
Adult party (21+)	25	20	10	45
Adult dinner party	20	15	5	60

Guests	12-oz cans	24-pack cases	2-liters
10	24	1	4
20	48	2	8
30	72	3	12
50	120	5	20
75	180	8	30
100	240	10	40
150	360	15	60
200	480	20	80

Guests	12-oz cans	24-pack cases	2-liters
10	24	1	4
20	48	2	8
30	72	3	12
50	120	5	20
75	180	8	30
100	240	10	40
150	360	15	60
200	480	20	80

Guests	12-oz cans	24-pack cases	2-liters
10	24	1	4
20	48	2	8
30	72	3	12
50	120	5	20
75	180	8	30
100	240	10	40
150	360	15	60
200	480	20	80