Advanced BAC Calculator
Estimate your Blood Alcohol Concentration (BAC) with drink details, weight in multiple units, and ABV percentage. This tool helps you understand your level of impairment for safe decisions.
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Personal Information
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Time Information
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Drink Details
Total Standard Drinks: 0.0
Estimated Blood Alcohol Concentration
0.06%
0.06%
BAC Level
Impaired – Do Not Drive
Legal Limit: In most countries, the legal BAC limit for driving is 0.08% (0.05% in some areas).
Impairment Begins: At 0.02% BAC, impairment of judgment begins. At 0.05%, coordination is significantly reduced.
Understanding BAC
📊 BAC Levels & Effects
- 0.00-0.03%: No loss of coordination, slight euphoria
- 0.04-0.06%: Lowered inhibitions, minor impairment
- 0.07-0.09%: Impaired judgment and coordination
- 0.10-0.12%: Significant motor impairment
- 0.13-0.15%: Gross motor impairment, blurred vision
- 0.16-0.30%: Severe impairment, risk of alcohol poisoning
- 0.31%+: Life-threatening alcohol poisoning
⏱️ How BAC Decreases
- BAC decreases at about 0.015% per hour
- Time is the only way to lower BAC – not coffee, food, or showers
- Metabolism rate varies by individual
- Eating before drinking slows absorption but doesn’t prevent impairment
🚗 Safe Driving Guidelines
- Never drive if you feel impaired
- Use designated drivers or ride-sharing services
- Understand that judgment is impaired before physical symptoms
- Alcohol affects individuals differently – don’t rely on “feeling fine”
Important Note: This calculator provides estimates only. Many factors affect actual BAC including metabolism, medication, food consumption, and individual tolerance. Never drive after drinking. This calculator is not a substitute for professional medical or legal advice.