Updated July 2026.
Most non-vintage brut Champagne is about 12% ABV. CIVC does not fix one percentage — it tends to be about 12%, with variation by type. A 5-ounce pour at 12% is one US standard drink; a 4-ounce flute is 0.80. A 750 mL is about 5.1 drinks at 12%. Read the label, not a house rumor.
Bubbles do not add alcohol. They can make you drink the glass faster. Dosage words (brut, extra brut, demi-sec) describe residual sugar, not proof. For the drunk-count page, see how much champagne to get drunk.
Champagne bottle math at 12% ABV
Standard drinks = (oz × ABV) ÷ 0.6. 750 mL = 25.36 US fl oz. 4 oz ≈ 118 mL; 5 oz ≈ 148 mL. 27 CFR 4.72 authorizes the common wine fills (187 mL, 375 mL, 750 mL, 1.5 L, 3 L).
| Bottle / pour | Volume | US fl oz | Std drinks at 12% |
|---|---|---|---|
| Hospitality flute | 118 mL | 4 | 0.80 |
| NIAAA wine glass | 148 mL | 5 | 1.00 |
| Restaurant white-wine pour | 177 mL | 6 | 1.20 |
| Split / piccolo (4.72) | 187 mL | 6.3 | ~1.3 |
| Half | 375 mL | 12.7 | ~2.5 |
| Standard | 750 mL | 25.4 | ~5.1 |
| Magnum | 1.5 L | 50.7 | ~10.1 |
| Jeroboam (Champagne, usually 3 L) | 3 L | 101 | ~20.3 |
A 750 mL at 12.5% is 25.36 × 0.125 ÷ 0.6 ≈ 5.3 drinks. UK “units” are a different yardstick: a house education page that counts 10 cl as one UK unit will call a bottle 7–7.5 units. That is not 5.1 US standard drinks. Do not mix the two.
Prosecco DOC and Cava are not Champagne AOC. They print their own ABV, often 11–12%. Five ounces of 11% prosecco is 0.92 drinks, not “free because it is Italian.” See prosecco for mimosa and prosecco vs moscato. A mimosa splits the glass with juice; the alcohol you poured is still in theremimosa math.
Brut vs the ABV line
Brut, extra brut, and demi-sec describe dosage, not proof. A sweeter demi-sec can be the same 12% ABV as a brut. Rosé Champagne is usually in the same band. Prestige cuvées are not automatically stronger. Named-house ABV only if that bottle — or an official tile — prints it. Retail listings are not a tile.
A Champagne cocktail that adds cognac is a wine drink plus a spirits drink. Count both. Opening the bottle does not change ABV; warmth and time change bubbles, not the labeled %. For leftover bottles in a freezer, see does Champagne freeze; freezing does not change the proof. For beer equivalence, a 5-ounce 12% pour equals one 12-ounce 5% beerbeer vs wine.
Sources
- NIAAA (December 2025): 5 fl oz of 12% wine = one standard drink (14 g / 0.6 fl oz). Binge 4/5 in ~2 hours — a warning.
- CDC standard drink sizes (December 12, 2024): 5 oz of 12% wine.
- Comité Champagne / champagne.fr: ABV must be on the label; typical bottled Champagne is about 12%, not a single AOC-fixed percentage. Dosage = sugar, not proof.
- Laurent-Perrier house education (fetched): most common 12%; some cuvées 12.5%; rarely 11.5 or 13%. Not a named-cuvee tile.
- 27 CFR 4.72: 187 mL, 375 mL, 750 mL, 1.5 L, 3 L are authorized wine fills (T.D. TTB-200 expanded the list).