Updated April 2026.
Typical non-vintage brut is around 12% ABV. A 5-ounce (148 mL) pour is one US standard drink. A 4-ounce flute — the pour many bars use — is 0.80 drinks at 12%, not a free glass. A 750 mL bottle is still about 5.1 drinks. Four drinks in about two hours is NIAAA’s binge pattern for women; five for men. Warning, not a toast plan.
It is not a CIVC-fixed single percentage. Do not treat a named house as 12% unless the label says so. A restaurant white-wine pour is often 6 ounces (1.2 drinks at 12%). A flute is not a unit of ethanol. See how much alcohol is in champagne.
Champagne as standard drinks (assume 12% unless the label differs)
Standard drinks = (fl oz × ABV) ÷ 0.6. 750 mL = 25.36 US fl oz. 4 oz ≈ 118 mL; 5 oz ≈ 148 mL.
| Pour | mL | fl oz | Std drinks at 12% |
|---|---|---|---|
| Common flute / hospitality pour | 118 | 4 | 0.80 |
| NIAAA wine glass | 148 | 5 | 1.00 |
| Restaurant white-wine pour | 177 | 6 | 1.20 |
| Split / piccolo | 187 | 6.3 | ~1.3 |
| Half bottle | 375 | 12.7 | ~2.5 |
| Standard bottle | 750 | 25.4 | ~5.1 |
| Magnum | 1500 | 50.7 | ~10.1 |
Six 4-ounce flutes empty a 750 mL. Five 5-ounce glasses do the same. The bottle is still about five standard drinks at 12%. A 2–3 oz toast pour is a sip, not a rebate on the next refill. Prosecco and cava print their own ABV — read that label. For still-wine pours, see beer vs wine.
Why “three flutes get you drunk” is not an answer
SERP pages invent “drunk at 3–4 glasses” and Widmark tables. That is a challenge. We will not copy it. Carbonation can speed early absorption for some people. A 2001 Surrey champagne study was six subjects; the BAC gap faded after about 35 minutes (NPR). A later vodka-and-soda trial (n=21) saw faster initial absorption on average, and no difference in several volunteers. Bubbles are not extra ethanol. Food delays peak BAC. Peak blood alcohol is often 30–90 minutes after you stop — see how long alcohol takes to kick in.
Legal BAC is 0.08% in most states (0.05% in Utah). Commercial drivers in a CMV are 0.04% (FMCSA). Under-21 is zero-tolerance. High-intensity drinking — eight drinks for women, ten for men, on one occasion — is a worse-warning, not a dare. A bottle shared by two over an hour is a different curve than a bottle solo. Feeling fine is not a roadside test. For generic shots, see how many shots.
If you are going to drink champagne, measure the pour, eat food, water, and do not drive. Four to five standard drinks in two hours is already binge drinking by NIAAA’s definition for many adults. This is math, not a wedding plan.
Sources
- NIAAA standard drink (December 2025): 5 oz of 12% wine = 14 g / 0.6 fl oz. Binge 4/5 in ~2 hours. High-intensity 8/10 — a warning.
- CDC standard drink (December 12, 2024): 5 oz of 12% wine.
- 750 mL = 25.36 US fl oz. At 12%, ≈5.1 standard drinks. 4 oz at 12% = 0.80 drinks.
- 27 CFR 4.72: 187 mL, 375 mL, 750 mL, 1.5 L are authorized wine fills.
- Champagne ABV: most NV brut ~12%; not a single CIVC percentage — read the label. Do not cite a named house ABV without the bottle.
- Ridout et al. 2001 / NPR 2013: early carbonation bump in a six-person champagne trial; gap gone by ~35 minutes. Robinson et al. 2007: carbonated mixer, variable. US 0.08% (Utah 0.05%); FMCSA CMV 0.04%.