BAC Calculator

No. BAC estimates vary widely based on individual biology, food intake, hydration, medications, and actual drink sizes. Never use any calculator to make driving decisions. Plan safe transportation in advance.

In the US, one standard drink contains approximately 14 grams of pure alcohol. This equals 12 oz of regular beer (5% ABV), 5 oz of wine (12% ABV), or 1.5 oz of distilled spirits (40% ABV). Craft beers and cocktails often contain significantly more alcohol than one standard drink.

The body eliminates alcohol at an average rate of about 0.015% BAC per hour. A BAC of 0.08% would take roughly 5 to 6 hours to fully eliminate, though individual rates vary. Sleep, coffee, and cold showers do not speed up elimination.

Eating before or while drinking slows alcohol absorption, which can lower peak BAC. However, food does not reduce the total amount of alcohol absorbed. The same total alcohol will eventually reach your bloodstream regardless of food intake.

In most US states, the legal limit is 0.08% for drivers aged 21 and over. Many states have lower limits for commercial drivers (0.04%) and zero tolerance for drivers under 21. Legal limits vary by country and jurisdiction.

You can. Look for the "Embed" button near the top of this calculator. It lets you pick a size, border style, and color palette, then gives you an iframe tag to paste into any webpage. The widget is responsive, loads fast, and costs nothing. More details at calculory.com/services/embed-calculators.