| Determine Your Tolerance | Results | |
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| Alcohol History | ||
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[no alcohol added]
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Purchase a Breathalyzer
This online BAC calculator is good for estimating your BAC level, but your actual BAC will vary depending on a host of different factors, such as your hydration status, recent meals, fluid intake, kidney function, and much more. If you’re interested in buying a breathalyzer to get a more accurate estimation, I would suggest one of the three models listed below:
| High Quality | Best Quality |
|---|---|
 |
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| BAC Chart Values | |
|---|---|
| 0.00 – 0.03% | Normal behavior, no impairment |
| 0.03 – 0.06% | Mild euphoria and impairment; decreased inhibitions |
| 0.06 – 0.10% | Buzzed, euphoric, increased impairment |
| 0.10 – 0.20% | Drunk, emotional swings, slurred speech, nausea, loss of reaction time and motor control |
| 0.20 – 0.30% | Confused, nauseated, poor mentation, blackout |
| 0.30 – 0.40% | Possibly unconscious, unarrousable, loss of bladder function, risk of death |
| Above 0.40% | Unconscious, coma, impaired breathing, risk of death |
Important Notes
- If you’re typing in a custom percent alcohol, remember that the proof of an alcohol is double the percent (e.g. 80 proof alcohol is 40%)
- If you’re entering a mixed drink, only count the number of shots you put in (not the drink’s total volume)
- Everyone is different — BAC calculators are merely an estimate. A breathalyzer or blood test is the only way to have an accurate measurement.
- This calculator assumes the legal limit for driving is 0.08% and 21 years old. Please note that the legal limit for driving may vary depending on state/country and your age.
- All calculations are based on the US Department of Transportation.
