Road Safety Utility
BAC Calculator
Estimate your Blood Alcohol Content based on the Widmark formula to ensure you are under the legal US limit.
Your Profile
Male
Female
lbs
Alcohol Consumed
Based on standard US drink sizes (0.6 oz pure alcohol).
Beer
12 oz @ 5% ABV
-
0
+
Wine
5 oz @ 12% ABV
-
0
+
Liquor / Shot
1.5 oz @ 40% ABV
-
0
+
Time Elapsed
Hrs
Estimated BAC
0.000%
Safe / Sober
0.00
0.04
0.08 Limit
0.20+
Total Pure Alcohol
0.00 oz
Estimated Time Until 0.00% BAC
0 Hrs 0 Mins
Utah has a stricter legal limit of 0.05% BAC. Commercial drivers (CDL) are restricted to 0.04% nationwide.
Disclaimer: This calculator provides a mathematical estimate based on the Widmark formula and average metabolism rates (0.015% per hour). It is not legal advice and should not be relied upon to determine if you are fit to drive. Individual metabolism varies greatly based on genetics, food intake, medications, and liver function. Law enforcement uses actual breath or blood tests, which will override any estimate. Never drink and drive.