BAC Calculator for Wine
Estimate your Blood Alcohol Content specifically from wine consumption — with presets for wine types and glass sizes.
⚠ Disclaimer
This calculator provides estimates only and should NOT be used to determine whether you are safe to drive or perform any activity. Actual BAC depends on many individual factors not accounted for here. When in doubt, do not drive.
How the Wine BAC Calculator Works
This calculator estimates your BAC from wine consumption using the Widmark formula. It converts each glass of wine into pure alcohol based on the glass size and wine type ABV%, then factors in your body weight, biological sex, and elapsed time.
A standard 5 oz glass of wine at 12% ABV contains about 0.6 oz of pure alcohol — one standard drink. However, many restaurants pour 6-8 oz glasses, and red wines can reach 14-15% ABV, meaning a single glass could equal 1.5 or more standard drinks.
Fortified wines like Port and Sherry have significantly higher ABV (15-22%), so even a small glass can contribute substantially to your BAC. Always be aware of the wine type and serving size.