A standard drink measurement is a consistent way of measuring the amount of alcohol in a drink. It is important to know how to count a standard drink to calculate blood alcohol concentrations accurately. Different types of beer, wine, or malt liquor can have very different amounts of alcohol content, and many people underestimate how much they have had to drink because they are not using standard measurements. A standard drink is defined as 0.6 oz of pure ethanol (ethyl alcohol), or 14 grams of pure alcohol. The purpose of a standard drink measurement is to educate alcohol users and help them make responsible, informed decisions about alcohol consumption. It is also used in relation to recommendations about alcohol consumption and its relative risks to health. By knowing how much alcohol is in a drink, people can better understand how much they are consuming and make informed decisions about their drinking habits.