📊 Current BAC
Your Current BAC shows your estimated blood alcohol concentration right now, displayed in g/L (the French legal unit) or as a percentage. This reflects how much alcohol is in your bloodstream and is used to assess impairment.
🚔 Legal limit
In France, the alcohol limit is 0.5 g/L (50mg/100ml of blood, or 0.25 mg/L of breath) for regular drivers. Novice drivers in their first 3 years and professional drivers must stay below 0.2 g/L. At 0.8 g/L or above, drink driving becomes a criminal offence.
🧪 Elimination rate
Your body metabolises alcohol at a steady rate — typically ~0.15 g/L per hour (or ~0.015% BAC/h). Nothing — not coffee, not a cold shower, not exercise — speeds this up.
🍺 Standard Drinks
One French verre standard ≈ 10g of pure alcohol — equivalent to a 100ml glass of wine at 12%, a 250ml demi of beer at 5%, or a 30ml shot of spirits at 40%.
🧴 Pure Alcohol
This is the total amount of pure alcohol (ethanol) your body has absorbed, in grams. Useful for comparing against weekly limits — Santé publique France recommends no more than 10 standard drinks per week.
⏱ Time vs. Sobriety Table
The table lists how your BAC is expected to change with each hour passed — and when a Start time of drinking is provided, it aligns these estimates with the exact time of day you began drinking. Particularly useful for the morning-after check: see at what clock time your BAC drops below 0.5 g/L the next day.
📈 Sobriety Over Time Graph
A visual line chart plotting your estimated BAC decline over hours. It helps you see when your BAC drops below the 0.5 g/L legal limit and then to zero.
😵 How Alcohol Affects You
This reference table shows ranges of BAC and typical effects on your body and behaviour — from mild alertness changes to severe impairment.
⏰ Legal limit reached in / Sober in / Peak BAC
These summaries give quick key estimates:
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Legal limit reached in: the time until your BAC likely falls below the French 0.5 g/L limit.
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Sober in: total time until BAC reaches ~0.00 g/L.
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Peak BAC: the highest BAC value recorded in the session.