Blood Alcohol Content:

Basics:

• Fluid Ounces Consumed:
  - 1 Beer ~ 12 oz.
  - 1 Glass of Wine ~ 4 oz.
  - 1 Shot ~ 1.5 oz
   
• Percent Alcohol:
  - 1 Beer ~ 4-5%
  - 1 Glass of Wine ~ 15-20%
  - 1 Shot ~ 30-50%

Above states the average amounts for each.  To find the exact amount, look on the label of whatever you're drinking.