Blood Alcohol Content Estimator estimates your BAC based on weight, gender, drinks consumed, and time since first drink. Add drink types, then click “Calculate BAC” to see your estimated BAC and intoxication level. Warning: This is an estimate; do not use to determine driving ability.

How to Use Blood Alcohol Content Estimator:

1. Select unit system (Imperial or Metric).
2. Enter your weight and gender.
3. Add drinks consumed (type, number, and custom ABV/volume if needed).
4. Enter time since first drink (hours).
5. Click “Calculate BAC” to see your estimated BAC and intoxication level.
6. Use “Share Result” or “Copy Result” to share or copy the output.

Calculation Details:

The estimator uses Widmark’s formula:

• Total Alcohol (g): \\(\text{Total Alcohol} = \sum (\text{Number of Drinks}_i \times \text{Alcohol per Drink}_i)\\)
• BAC (%): \\(\text{BAC} = \frac{\text{Total Alcohol (g)}}{\text{Weight (g)} \times r} \times 100 – 0.015 \times \text{Hours}\\)
• Widmark Factor (r): Male: 0.68, Female: 0.55
• Standard Drinks (US): Beer (12 oz, 5%): 14 g, Wine (5 oz, 12%): 14 g, Liquor (1.5 oz, 40%): 14 g

Note: BAC is an estimate. Do not use to determine driving ability; consult a professional.

Important Notes:

• BAC ≥ 0.08% is the US legal driving limit; ≥ 0.20% indicates severe intoxication.
• Actual BAC varies by metabolism, food intake, and other factors.
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