How many glasses are in a box of wine? (3L, 5L, 10L)
A 3-liter box of wine contains about 24 glasses of wine (12.5 cl per glass), a 5-liter about 40 glasses, and a 10-liter about 80 glasses. For a meal, count on 2 to 3 glasses per person. For an apéritif, 1 to 2 glasses are enough.
The basis for calculation: 12.5 cl per glass
Everything starts with a standard unit: a glass of wine = 12.5 cl. This is the serving size in restaurants, the sommeliers' standard, and what is naturally poured into a wine glass filled to one-third—which leaves room for the aromas.
Some pour a little more (15 cl), others a little less (10 cl depending on the glasses). But 12.5 cl is the most reliable benchmark for planning without mistakes. It is better to underestimate and not run out of wine than to overestimate and waste.
The table: how many glasses per volume
BIB 3L: 300 cl ÷ 12.5 cl = 24 glasses — equivalent to 4 bottles.
BIB 5L: 500 cl ÷ 12.5 cl = 40 glasses — equivalent to 6.5 bottles.
BIB 10L: 1000 cl ÷ 12.5 cl = 80 glasses — equivalent to 13 bottles.
As a reminder, a standard 75 cl bottle contains 6 glasses — which confirms the equivalencies above.
How many glasses for your occasion?
Raw numbers are good, concrete examples are better.
Apéritif for 6 people (1.5 hours): count 2 glasses per person = 12 glasses. A 3L (24 glasses) easily covers this, with room to spare if the apéritif runs long.
Dinner for 4 people: count 2 to 3 glasses per person = 8 to 12 glasses. A 3L works perfectly, in red or white depending on the menu.
Family meal (10 people, 2 courses): count 3 glasses per adult = 30 glasses minimum. A 5L (40 glasses) is the right size — you have enough cushion without ending up with too much leftover.
Birthday party (20 people, evening): count 4 to 5 glasses per person over 4 hours = 80 to 100 glasses. A 10L (80 glasses) is well-calibrated, supplemented by a 3L if the evening stretches on.
Wedding for 100 people: the calculation logic changes — consult our complete guide on how much wine to provide for a wedding.
A simple rule: better to plan generously
With a BIB (Bag-in-Box), planning a little extra is never a problem. Opened wine stays fresh for 4 to 6 weeks — what remains in the BIB will be just as good in two weeks as it is today. You aren't wasting anything. You are just delaying your next glass.
This is the opposite of an uncorked bottle, which oxidizes in 48 hours. With the BIB, the "I'm afraid of having too much" concern disappears completely.
To choose the right volume for your use, consult our complete guide on which box size to choose — it covers all formats from 3L to 33L with concrete examples.
And to explore our selection, everything is on all our BIB wines.
Frequently Asked Questions
How many glasses in a bottle of wine?
A standard 75 cl bottle contains 6 glasses (at 12.5 cl per glass). A 3L box therefore contains as much as 4 bottles — 24 glasses.
How many glasses in a 5L box for a meal?
A 5L contains 40 glasses. For a meal where each guest drinks 3 glasses, a 5L covers a table of 13 people. For 8 people with 3 glasses each (24 glasses), there is plenty of room left — perfect for latecomers or those who want more.
Do you lose glasses between the first and the last?
No. Unlike a bottle that oxidizes as soon as it is opened, the BIB preserves the wine from the first to the last glass thanks to its airtight bag. The 40th glass from a 5L is just as fresh as the first glass.