How Many Cups Does a 5L Beverage Dispenser Serve?

Short answer: a 5 L beverage dispenser yields 25 cups at 200 ml, 20 cups at 250 ml and 16 cups at 300 ml. When served over ice, the liquid displaced by ice means the same tank realistically covers 30-40 servings. For planning, assume 1.8-2.5 cups per guest over a two-hour service, so 100 guests need 45-63 litres on hand — nine to thirteen 5 L tanks, or fewer tanks with a back-of-house refill system. See tank options in our beverage dispenser range.

Cups per tank, by cup size

Yield depends on cup size and whether ice is used. The figures below assume a standard fill to about 90% of tank capacity so the tap does not dribble.

Cup size	Cups per 5 L tank (no ice)	Cups per 5 L tank (with ice)	Typical use
150 ml	33	45-50	Tasting, juice shots
200 ml	25	35-40	Breakfast juice standard
250 ml	20	28-32	Standard beverage cup
300 ml	16	22-26	Long drinks, iced tea
350 ml	14	19-22	Large cold drinks
500 ml	10	13-16	Bottled-style servings

Ice is the reason to plan with a margin. A 250 ml cup filled with ice holds only 150-170 ml of liquid, so the tank stretches further per cup, but guests also take more cups in hot weather.

Dispenser count by guest number

Use consumption rate rather than tank count as the primary figure. Over a two-hour breakfast or reception, expect 450-625 ml per guest across all beverages.

Guests	Total litres needed (2 h)	5 L tanks online	Recommended configuration	Back-up stock
25	11-16 L	3	1 x triple head	5 L
50	23-31 L	5-6	2 x triple head	10 L
100	45-63 L	10-13	3 x triple head + 1 x 2-head	20 L
150	68-94 L	15-19	4 x triple head + 2 x 2-head	30 L
200	90-125 L	19-25	6 x triple head, two stations	40 L
300	135-188 L	28-38	Three stations, 3 x triple each	60 L

Above 150 guests, split into two beverage stations placed on opposite sides of the room. One large station creates a queue that blocks the food line, which is the single most common layout complaint at conferences.

Cold and hot holding notes

Cold beverages must hold at 5°C or below and hot beverages at 60°C or above; the band between them is where bacteria multiply fastest. Insulated or double-wall tanks hold temperature for 2-4 hours without a power source, which suits receptions; for all-day service, a refrigerated or heated base is required. Pre-chill the tank with cold product rather than relying on ice added at service, since dilution changes taste and the meltwater raises the temperature fastest right when the room is busiest.

Beverage planning by service type

Consumption per guest varies far more by event type than by headcount. A working breakfast behaves nothing like a cocktail reception, even with the same number of guests.

Event	Duration	Per guest	100 guests total	Tanks needed
Breakfast buffet	90 min	450-625 ml	45-63 L	10-13
Working coffee break	30 min	200-300 ml	20-30 L	4-6
Lunch service	2 h	500-700 ml	50-70 L	10-14
Cocktail reception	2 h	600-900 ml	60-90 L	12-18
Outdoor summer event	3 h	900-1,400 ml	90-140 L	18-28
Conference, all day	8 h	1.2-1.8 L	120-180 L	24-36

Weather and room temperature move these numbers by 20-30% at the extremes. For outdoor summer events, add capacity rather than ice: extra tanks keep the product cold, while extra ice dilutes it.

Frequently Asked Questions

How many litres of juice for 100 guests at breakfast?

Plan 45-63 litres for a two-hour breakfast across all juices and water. If you offer four juices, that is roughly 12-16 litres of each, plus water.

Does a 2-head dispenser hold twice as much as a single?

Yes in total volume — two 5 L tanks equals 10 L — but each tank is independent, so you can offer two products rather than double the quantity of one.

How long will a cold dispenser stay safe without power?

An insulated tank holds below 5°C for 2-4 hours if pre-chilled and kept out of direct sun. Use a refrigerated base for anything longer, and check with a probe thermometer hourly.

Should I use ice inside the tank or a cooling jacket?

Neither is ideal in the tank. Ice added directly dilutes the product; a stainless ice jacket or refrigerated base keeps quality consistent and avoids dilution.

How often should dispensers be cleaned?

Rinse and sanitise the tank and tap daily in commercial use, and fully strip the tap weekly. Sugar-based drinks leave a biofilm that causes off-flavours within a day if the tap is not stripped.