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Shauna 07/17/12 
Serving approx 75 to 100 people root beer floats in an 8 oz cup. How many 2 liter bottles of root beer would I need, and how many gallons of ice cream? 
ellen 07/18/12 
About 5 gallons of ice cream, 1 2 liter per 1012. 
Olivia 09/27/12 
I need to make this for 150 people can you give me the items needed and quantiy. 
ellen 09/28/12 
8 gallons of ice cream, soda does not change, still 1 2liter per 10 to 12, depending on size of cups. Get some sugar free soda. 
Anton 01/27/13 
Hello! I am going to be doing a demonstration speech for my class on how to make root beer floats. Because I have a limited amount of time, I am planning to make them in a pitcher. Any tips for how to mix the ice cream for even consistency? Thank you! 
ellen 01/27/13 
Anton, I have no idea how to do these by the pitcher what I would do is prescoop 1 scoop in each cup, freeze in the cups, and fill with root beer at serving time. The BEST way is to fill the individual cup with 2/3 root beer. put in the scoop and then add just enough root beer to get the tasty foam. 
ellen 01/28/13 
Here are somre sites that will help you develop your talk: en.wikipedia.org/wiki/Ice_cream_soda www.yumsugar.com/NationalRootBeerFloatDayFirstBlackCow485689 www.science20.com/science_20/science_root_beer_float 
Anton Relin 01/30/13 
Thank you so much! I took your recommendation for scooping into each cup and storing in the freezer. You have made my life a lot easier! 
veronika 04/17/13 
root beer floats for 30 hi ellen i was wondering HOW MUCH WOULD IT BE FOR ME TO MAKE ROOTBEER FLOATS for 30 people 
ellen 04/17/13 
6 liters root beer, a bit less than 2 gallons ice cream. 
holly 05/13/13 
root beer floats for 300 how much for 300 floats? 
ellen 05/13/13 
Holly, just read the thread 
Kiona 10/21/13 
root beer floats for 2,00 people hello! I know this a huge body of people. I will be saleing these a church dance coference. Also wondering what would be the best way to store these at a dance? thank you 
kiona 10/21/13 
root beer floats for 2,00 I meant 2,000. 
Kiona 10/21/13 
sorry it changed to 1,000 ignore the first one that says 2,000 
ellen 10/21/13 
As advised above, prescoop and freeze the ice cream. Assemble on site, per order. Many people prefer coke floats you might offer a choice. 
Hannah 11/05/13 
root beer floats for 80 How much for 80 people?! 
ellen 11/05/13 
Same as shauna, first on this thread. 
Aryana Galvan 02/03/14 
Who much money would it cost to make 20 root beer floats? 
ellen 02/03/14 
Each one takes about 10 ounces of root beer (about 6 per 2 liter bottle, so you would get 4) and a long half cup of ice cream (1215 per half gallon, so you would get 2). Costs depend on local sales and whether you are using brand name soda and ice cream. I am sure you can calculate this. 
joan 02/20/14 
how much whip cream needed to top ice cream soda? 
ellen 02/21/14 
Using canned, about 1 can per 20. 
alexa 07/21/14 
Hello! How much pop and ice cream for 60 people in 16 oz. cups? Thank you 
ellen 07/21/14 
Alexa, see 02/03/14 above, you need 3 times as much for 60 as she does for 20. 
carlene.vasquez 08/22/14 
root beer floats for 200 I have 200250 employees I need to provide Ice cream floats for . How much Ice cream and How much root beer do I need? Thanks Carlene 
ellen 08/27/14 
8 gallons of ice cream per 150, soda 1 2liter per 10 to 12, depending on size of cups. Get some sugar free soda. 
Bridget 08/30/14 
How much for 150?! Haha. Just kidding. I can read! Lol 
ellen 08/30/14 
Good. Sometimes I wonder if anyone teachers fractions or ratio and proportion any more... 
Bridget 08/30/14 
Probably not. Or they do and it's easier to ask you! But I am glad you did have this thread. I was about to buy not enough ice cream! 
Lillie 09/01/14 
How many for 150 in 16 oz cups 
ellen 09/02/14 
Same amount of ice cream, 8 gallons, but allow 1 2 liter bottle of soda per 8. 
Rick 10/03/14 
I'm making 233 floats on a train that leaves Chicago at 60 mph and will serve them at about 2:30 p.m. How many times should I wave at people as they arrive? I'm kidding of course. Thanks for the info and for your patience with everyone asking you to do their math. :) 
ellen 10/03/14 
Karma, not trains... you are welcome 
Dana 12/10/14 
I just wanted to include a trick that I use for serving large groups. Throw the ice cream scoop away and just open up the ice cream containers completely and put on a cutting board and cut into single serving wedges. Its much faster. 
ellen 12/10/14 
Great for serving, not so easy for floats. 
Dana 12/10/14 
It really was easy for floats too. I cut the wedge to fit perfectly in the cup and we poured the root beer over the top. We had to serve 100 kids in a short period of time and did not have freezer space to prescoop and store. 
ellen 12/10/14 
Interesting, thanks. 
Lindsey 12/12/14 
Hi! I have been reading your thread and got some good answers. BUT from what I can tell, unless I missed one, these are for adult portions. I will be serving about 50 K5th graders. I was wondering if you could recommend a good size and around how much Root Beer & Ice Cream you feel appropriate in this case. Sorry if you've covered this. 
ellen 12/12/14 
I would use an 810 ounce cup with 1/4 cup ice cream and allow for seconds. Clear cups are more fun. Straws are essential. 
Megan B 06/02/15 
root beer floats for 120 I'm making about 120130 8 oz rootbeer floats for an event. Could you tell me how many gallons of ice cream I'll need? 
ellen 06/02/15 
Usual is 1/2 cup per serving=60 cups, 15 quarts, or about 4 gallons. 
Kim 08/06/15 
This was so useful for me! I run a college and we are serving 400 students for National Root Beer Float today! My assistant probably thanks you the most...she had to shop for the supplies! 
ellen 08/06/15 
You're welcome! Donations always appreciated! 
Becki 08/17/15 
I absolutely loved Rick's comment. Seriously though, this was very helpful for me as we are going to make root beer floats at a 50s themed party and this will give us a good guide. I'll do the math. Thanks! 
Candice 08/18/15 
I am planning on making 100 12oz floats How much ice cream and root beer should I order? 
ellen 08/19/15 
See the very first post on this thread. 
Danette 08/22/15 
Ellen thank you! I'm having a root beer float party and it doesn't matter the number who will attend because you gave me the information I need to INPUT into a simple math problem to use whether I'm have 10 people or 100,000 people! THANK YOU! I can't believe you continue to answer the STUPID questions about how much ice cream or root beer to order. FIGURE it our PEOPLE! It is SIMPLE MATH! Thank you again! 
ellen 08/22/15 
Hi, Danette, Many people are very scared of any math that has fractions or ratios, so I see this on many of my threads. Fear does make you weak. Someday I will have an app for that and I will make a fortune. 
Michelle 10/18/15 
root beer floats for 30 kids Hello I would like to make root beer floats for 30 kids using 12oz styrofoam cups. How much ice cream and root beer do I need? 
ellen 10/18/15 
a gallon of ice cream for careful half cup scoops (I would do a couple quarts extra, with maybe one sugar free?), and 4 2iter bottles, (maybe plus 1 sugar free)? But if you did not count the grownups/ servers, add some more. 
Heidi 10/19/15 
I was wondering how much root beer and ice cream for 20 Kindergarteners? Thanks! 
ellen 10/19/15 
810 ounce cup, 1/4 cup ice cream, 3/4 cup (6 ounces) soda per kid. If there is any kid who can't do dairy, use a chuck of popsicle. 
ellen 10/19/15 
810 ounce cup, 1/4 cup ice cream, 3/4 cup (6 ounces) soda per kid. If there is any kid who can't do dairy, use a chuck of popsicle. 
Terry 12/07/15 
How much ice cream for 100 servings ( root beer floats)in 14 oz cups 
ellen 12/07/15 
long 1/2 cup per person=60 cups. Buy 5 gallons to allow for staff and seconds. Use a measured scoop. If you are very careful, you could get by with 4 but nobody ever is... 
Jenna 02/18/16 
Hi how much ice cream do I need to serve 300 people? Our school cook said 8 but that doesn't seem like enough... 
ellen 02/18/16 
Depends on the size of the scoop. One 1/2 cup scoop per person, just about 30 people per gallon. The note just above applies. 
winnie 04/11/16 
hello how much ice cream and root beer do we need for 200 people with 16oz cups 
ellen 04/12/16 
One 1/2 cup scoop per person, just about 30 people per gallon. The note just above, 02/18/16, applies. 68 gallons, depending on scoop generosity and whether there will be seconds. For the soda with these large cups, 6 per each 2 liter bottle, about 36 2 liter bottles. You might get a few sugar free for anyone who wants just a cup of sugar free soda there will be some diabetics in a crowd this size. If there is any one who can't do dairy, use a chuck of popsicle. Does this help? I am doing a fundraising campaign to remodel the kitchen and provide the changes you readers have asked for please click the masthead at the top of this page to go to www.ellensbigpots.com and make a donation. Thank you. 
Marisa 04/28/16 
Thank you for this thread! SOOOO helpful!! 
Shannon 06/13/16 
Hello, We are doing root beer floats at work for approx. 350 employees. So correct me if I am wrong but what I get from above threads is....I need 1 2 liter bottle per 1012 people totaling 30 2liter bottles of soda?(I will add a few diet Cokes/Cokes for choices) I will need 8 gallons per 150 people so I will get 20 gallons of ice cream. We are using 18 oz Red Solo cups. We would rather have too much than not enough. :( Any help is appreciated. 
ellen 06/13/16 
Use the one right above, 16 ounce cups, to increase your soda. Probably a bit over on ice cream, but people always seem willing to eat it up... 
Shannon 06/13/16 
Thanks! :) 
Angela 09/08/16 
How much ice cream do most people use  a cup, 1/2 cups, 3/4 cup  Thanks 
ellen 09/09/16 
one 1/2 cup scoop 
Liz 09/21/16 
root beer floats for 400 youth I have to make floats for 400 teenagers tonight for a church function. We aren't making huge servings. Just a light refreshment after activities. How many liters of soda/gallons of icecream do you think I need to buy? 
phersey 09/29/16 
how many 2 liter bottles of root beer will I need for 100 root beer floats??? 
ellen 10/01/16 
Liz, for small ones use this formula, 10/19/15 810 ounce cup, 1/4 cup ice cream, 3/4 cup (6 ounces) soda per kid. If there is any kid who can't do dairy, use a chuck of popsicle. Phersey, for large adult/teen size, 1 2liter per 1012. 
Kevin 10/10/16 
How much root beer and ice cream would you expect if you bought one for two dollars. 
ellen 10/11/16 
500 cents worth actual cost. Usually on food, the food itself is just 1/3 to1/4 of the cost. 
Owen 11/21/16 
How many liters of root beer do I need for 24 people 
ellen 11/21/16 
Owen, is this for root beer floats? If so, it matters what size cups you are using write back. If it is just for drinking, see the beverage planning page. 
Zach 02/21/17 
For speech class I'm going to make a root beer float and I would appreciate it if you could tell me how to make it in 3 minutes. I'm planning on making it in a pitcher, and then pouring it in cups to my classmates, would that be the right way? Also how much root beer and ice cream do I get for 18 people? Thanks 
ellen 02/24/17 
Zach, a food theme for a talk is excellent, but floats don't pour. You can do this: get a gallon of vanilla ice cream in the brick form, 20 1216 ounce cups, 3 2 liter root beers and 1 sugar free. Straws or plastic ice tea spoons or both. Can of spray whip cream if you want to get really fancy. Set out the cups on a tray. Starting your talk, whack the ice cream into 24 long strips by cutting 4 strips (3 cuts) down the length and 6 strips (5 cuts) across. This will give you 24 "logs". Point out that these fit in the cups, set aside don't put in cups yet. Point out that if you put the ice cream in first the cups overflow with foam. Fill each cup over 1/2 w rootbeer, slip the sticks in, foaming starts, add the rest of the root beer to each to get a head of foam. Insert spoon/straw, top with whip cream if you use it, and take a bow. The sugar free is for anyone who can't have a float. 
Becky 04/11/17 
Ellen, You are AMAZING!! Thank you so much for this information. With a little math was able to take the amounts given, and figure out exactly what I needed for my event. You are awesome! 
ellen 04/11/17 
I LOVE readers who use my info and their brains to get where they need to go! Thanks! 
michelle 06/06/17 
root beer floats for 70 how many gallons and liters of root beer for 70 people? 
ellen 06/06/17 
About 4 gallons of ice cream, 1 2 liter per 1012. For the soda with very large cups, 6 per each 2 liter bottle. You might get a few sugar free for anyone who wants just a cup of sugar free soda there may be some diabetics in a crowd this size. If there is any one who can't do dairy, use a chuck of popsicle. 
Dan 06/14/17 
I am looking for 8  10 oz cups that have 2 oz of ice cream in them already. So I can just pull them out of the freezer and add root beer. Does anyone know where I can get these? 
ellen 06/16/17 
No such, as ice cream in first makes it just about impossible to add the root beer. What you can do is buy brick ice cream, cut into sticks and keep frozen, then put in the root beer and drop in the ice cream (it's fast). 
Tera 06/27/17 
root beer floats for 25 How much ice cream and root beer for 25 people? 
ellen 06/27/17 
For 30, root beer floats for 30: 6 2liters root beer, a bit less than 2 gallons ice cream. So for 25, 5 2liters and 67 quarts. Allows for seconds. 
vira 08/29/17 
root beer floats for 150 I need to make 150 floats with 8.5 oz cups how many 5 quarts of ice cream and 2 liter drinks will I need. 
ellen 08/29/17 
This is a small float. You might use 1/3 cup scoops of ice cream make them ahead and freeze. Then put 6 ounces of cold root beer in the cup and flip the scoop on top. 10 servings per 2 liter jug, 10 scoops per quart or 40 scoops per gallon. Don't put he ice cream in first, it will overflow. 
Kevin 09/20/17 
How much ice cream to root beer for a 16 oz cup 
ellen 09/20/17 
A generous half cup scoop is plenty of ice cream, about 28 per gallon of ice cream. each 2 liter will pour 6 servings for this size. 
Kristen 05/03/18 
How much ice cream and root beer would I need for 7oz cups and 1600 people? 
ellen 05/03/18 
With 7 ounce cups, you only need a 1/4 cup scoop of ice cream, 2 ounce. You can buy this size scoop at restaurant supply houses. 4 ounces root beer per cup, then add ice cream, this size cup no room for overflow.
So a half gallon of ice cream would do 30+ servings, 80 1/2 gallons If I were serving this size crowd, I would rent a multispigot soft serve machine for the ice cream. Scooping this much ice cream is an invitation for a wrist sprain. You do get that at even 2 minutes person, which is very fast, you are looking at 3200 minutes = 54 hours of serving time plus set up and clean up. Staff accordingly. If this is a paid gig or I have saved you time, trouble, or money, please make a donation to support the site. Thanks. 
Linda 05/16/18 
Emily How much ice cream and Root beer do I need for 50 people using 12 oz. cups? 
Nicole 05/17/18 
What size cups and ice cream scoop do you recommend to serve at a wedding reception? Do you recommend filling the glass with the soda part way the wedding the prescooped ice cream? 
ellen 05/17/18 
Linda, with 12 ounce cups and 1/2 cup ice cream scoops, a 2 liter bottle makes 8 and a quart of ice cream makes 8. To allow for seconds, you might get 8 2 liter bottles (suggest 1 sugarfree) and 8 quarts of ice cream. Check your ice cream package size, some only have 1 1/2 quarts! 
ellen 05/17/18 
Nicole, if you put the ice cream in the cup first, the soda goes everywhere when you add it. Nearly fill the cup, flip n the prescooped ball of ice cream, then add just enough more soda to get a nice head of foam. A 12 ounce cup is sufficient unless it is mostly young people, then go with 16. 
Barbara 06/05/18 
root beer floats for 150 have you ever made root beer float punch? For 125 people do I use the same proportions as above when using a punch bowl instead of individual glasses? 
ellen 06/08/18 
root beer float punch for 125 If I were inventing a root beer float punch, here are the things I would do: Use good root beer; Barq's or IBC are my preferences among the mass brands.
Make root beer ice rings Pre chill ALL the root beer. Put the ice ring in the bowl. Pour 1 2 liter over, add 1 cup 1/2 and 1/2, stir. Add 1/2 the second 2 liter, scoop on about 2 quarts of vanilla ice cream and pour he last of he root beer over all, creating the lovely foam. Stir gently and serve. This will make 5 rounds, so You are looking at about 10 quarts of ice cream and 5 cups of half and half. The half and half assures the creamy texture in every cup. The root beer ice rings are pretty and keep it chilled, helping to reduce excessive foaming. Have at least 1 2 liter of sugar free root beer for any carb watchers. Adultify the punch with 2 cups of vanilla vodka or bourbon per bowl. 
Wendy 07/31/18 
root beer floats for 60 I need to make 60 Root Beer floats for office. How many gallons of ice cream, we would use 12 scoops per float. How many liters of soda for 12 oz cups? 
ellen 07/31/18 
Wendy, you do 3 times the amount for 20, see 2/3/14. Your wrist will get tired maybe do the stick form ice cream as suggested 2/24/17. Do have at least 1 2 liter of diet root beer for any carb watchers or diabetics. 
Jeannie 10/16/18 
How much ice cream How much root beer do I need for 120 floats in 20 oz cups? 
ellen 10/19/18 
This size cup, 4 per 2 liter bottle, 12 per gallon of ice cream. See the discussions above about prescooping he ice cream. 
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Arlynda 06/27/19 
root beer floats for 500 I will be making 500 floats in 20oz cups. How many gallons of ice cream and how many gallons of rootbeer 
ellen 06/27/19 
root beer floats for 500 This size cup, 4 per 2 liter bottle, 12 per gallon of ice cream. See the discussions above about prescooping the ice cream and freezing the scoops. if you put the ice cream in the cup first, the soda goes everywhere when you add it. Nearly fill the cup, flip n the prescooped ball of ice cream, then add just enough more soda to get a nice head of foam. Your wrist will get tired maybe do the stick form ice cream as suggested 2/24/17. Do have several 2 liters of diet root beer for any carb watchers or diabetics. 
ellen 06/27/19 
Clear cups are more fun. Straws are essential, but look for paper straws. 
Jarrod 08/21/19 
Floats for 270? 
ellen 08/24/19 
Jarrod, what size cups? You can actually figure this yourself if you read the thread, and will get hints for easier serving. But, if you say what size, I will figure it for you. For example, with 12 ounce cups and 1/2 cup ice cream scoops, a 2 liter bottle makes 8 and a quart of ice cream makes 8. To allow for seconds, you might get 8 2 liter bottles (suggest 1 sugarfree) and 8 quarts of ice cream. Check your ice cream package size, some only have 1 1/2 quarts! 