Bottles for the toast.
One flute per toasting guest, six flutes per bottle.
Bottles (750 ml)
0
Flutes poured
0
How it works
The math, in the open.
A standard 750 ml bottle holds 25.4 fluid ounces, enough for six 4-ounce toast pours with a splash left. If you pour fuller glasses of 5 ounces, plan for five per bottle.
| Step | Formula |
|---|---|
| Flutes | guests × % taking a glass, rounded up |
| Bottles | flutes ÷ 6, rounded up |
| Pour | 4 oz per flute; a 750 ml bottle holds 25.4 oz |
Example: 120 guests, everyone toasting: 120 flutes ÷ 6 = 20 bottles.
Bottles by guest count
Toast math, done.
| Guests | 4 oz, everyone | 4 oz, 75% take a glass | 5 oz, everyone | Magnums (4 oz) |
|---|---|---|---|---|
| 25 | 5 | 4 | 5 | 3 |
| 50 | 9 | 7 | 10 | 5 |
| 75 | 13 | 10 | 15 | 7 |
| 100 | 17 | 13 | 20 | 9 |
| 120 | 20 | 15 | 24 | 10 |
| 150 | 25 | 19 | 30 | 13 |
| 200 | 34 | 25 | 40 | 17 |
| 250 | 42 | 32 | 50 | 21 |
| 300 | 50 | 38 | 60 | 25 |
Ways to save
Smaller pours, fewer bottles.
Not everyone takes a glass. Pre-pouring for every seat wastes the bottles of guests who do not drink and leaves full flutes on tables. Many couples pour for about three in four guests and let the rest toast with what they already hold.
Pour 4 ounces, not 5. A toast is a few sips. The smaller pour saves a sixth of the order.
Sparkling wine is champagne's cheaper cousin. Only wine from the Champagne region of France carries the name, but cava, prosecco and American sparkling wines pour the same way.
Count it apart from the bar. The alcohol calculator covers the reception; add the toast bottles on top, and chill them with extra ice.
FAQ
Questions people ask.
How many glasses in a bottle of champagne?
About six 4-ounce flutes, or five fuller 5-ounce glasses, per 750 ml bottle.
Do all guests need a glass?
Many couples pour only for those who want one. Setting the share to 70–80% saves bottles.
What about magnums?
A 1.5 L magnum holds two standard bottles, or about 12 flutes.
How many bottles of champagne for 100 guests?
17 bottles for 4-ounce pours to everyone, or 13 if three in four guests take a glass.
How many bottles for 50 people?
9 bottles for 4-ounce pours to all 50.
Related
Keep planning.
Estimates for planning, not quotes or legal advice. Formulas tested Oct 8, 2026.