Blood alcohol content (BAC) is used as a metric of alcohol intoxication. it also called blood alcohol concentration.
BAC% = (A × 5.14/W × r) - .015 × H
Where H is Time passed since drinking, in hours, r is The alcohol distribution ratio, 0.73 for man, and 0.66 for women, W is Body weight, in pounds (lbs), A is Total alcohol consumed, in ounces (oz)
The map above shows countries' blood alcohol limits.