Autosafe Drinking is a blood alcohol content (BAC) estimator for those who enjoys having a few drinks from time to time. It have BAC limits for 74 countries which will help you not getting any sanctions or help you stay out of jail. This let you switch from Widmark or Watson BAC calculation formula, and use for calculation the height, weight, age, gender and metabolism. The units are in metric by default but can be changed to US or Imperial if needed.