Widmark BAC & Drive-Again-Time Calculator
Enter your drinks, weight, sex, and hours elapsed to estimate your current BAC and the time left until 0.03% and 0%. (Reference only — no legal force.)
🧍 Your Info
Together with the sex factor, drives your BAC
Time elapsed since your last glass
🍺 Drinks
🚫🚗 Driving now would be drink-driving
Estimated BAC still remains. Use a designated driver or public transit and drive only after you are fully sober. This estimate has no legal force.
📊 Result
Current estimated BAC
0.048%
License suspension levelconservative–optimistic range: 0.043% ~ 0.053%
0.03%–0.08% — drink-driving suspension level. Do not drive.
Until 0.03% (drivable)
1h 11m
Estimated time 12:17 AM
Until 0% (fully sober)
3h 11m
Estimated time 2:17 AM
Total alcohol
54.0 g
Peak BAC
0.063%
Estimated BAC decline over time
Based on default β=0.015%/h. Actual values vary by person.
Formula & Threshold Sources
- 📐 Modified Widmark: C = (A×0.7) ÷ (10×P×R) − β×t
- 🧪 Ethanol density 0.7894 g/mL · absorption factor 0.7
- ⚧ Sex factor R: male 0.86 / female 0.64
- ⏱️ Elimination β default 0.015%/h (range 0.008–0.030)
- ⚖️ Thresholds: Korea Road Traffic Act (0.03%/0.08%/0.2%)
※ Reference estimate only, no legal force. Individual factors may cause large differences. Always drive only after BAC returns to 0%.
Guide · FAQ · bal.pe.kr 도구 모음
계산 공식·계수 상세는 Guide , 자주 묻는 질문은 FAQ , 출처·운영 정보는 About 참조. 마지막 업데이트 2026-07-06.