A premium, responsive calculator that estimates blood alcohol content in real time based on gender, weight in pounds, drink counts, and elapsed time.
Beer
12oz · 5% ABV
Wine
5oz · 12% ABV
Liquor
1.5oz · 40% ABV
Step 1
Beer
12oz · 5%
Wine
5oz · 12%
Liquor
1.5oz · 40%
Step 2
Estimated BAC updates instantly as you edit gender, weight, drink counts, or elapsed time.
Estimated BAC
0.071%
Recalculated instantly from the inputs on the left.
Disclaimer
Never rely on a BAC estimate to decide whether to drive. If you feel impaired, choose a safe alternative and wait longer.
Blood Alcohol Content (BAC) measures the percentage of alcohol in your bloodstream. This live BAC track tool is designed for educational estimation and can help users understand how gender, body weight, and elapsed time affect alcohol concentration.
Body weight, drinking pace, food intake, medication use, and genetics all influence how quickly BAC rises and falls.
Blacking out can indicate dangerous intoxication, memory loss, and impaired decision-making. Seek help if someone is unresponsive or showing signs of alcohol poisoning.
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