Alcohol content of liquors

Example

Light beer has 3% alcohol

That means:

3 out of 100 ml is alcohol. Rest is water and flavoring, yeast, and other stuff

So when you drink 100 ml of light beer, you are drinking 3 ml of pure alcohol

So when you drink 300 ml of light beer, you are drinking 9 ml of pure alcohol

Remember one standard drink is 18 ml of pure alcohol

So when you drink 300 ml light beer: You are drinking half standard drink.

Here is chart for other alcohols

Strong beer or Malt liquor

Has 7% alcohol.

7% means: 7 out of 100 ml is alcohol. Rest is water, flavoring, yeast, and other stuff

When you drink 100 ml glass: You are drinking 7 ml of pure alcohol.

When you drink 300 ml glass: You are drinking 21 ml of pure alcohol.

So when you drink 300 ml strong beer: You are drinking little more than one standard drink.

Wine

Has 12% alcohol.

12% means: 12 out of 100 ml is alcohol. Rest is water, flavoring, and other stuff.

When you drink 100 ml glass: You are drinking 12 ml of pure alcohol.

When you drink 300 ml glass: You are drinking 36 ml of pure alcohol.

So when you drink 300 ml wine: You are drinking 2 standard drinks.

Whisky, Vodka, Rum

Has 40% alcohol.

40% means: 40 out of 100 ml is alcohol. Rest is water, flavoring, and other stuff.

When you drink 100 ml glass: You are drinking 40 ml of pure alcohol.

When you drink 300 ml glass: You are drinking 120 ml of pure alcoho.l

Almost half of your drink is alcohol.

So when you drink 300 ml whisky: You are drinking just about 7 standard drinks.

Absinthe, grain alcohol, some types of vodkas

Has up to 90% alcohol.

90% means: 90 out of 100 ml is alcohol. Rest is water, flavoring, and other stuff.

When you drink 100 ml glass: You are drinking 90 ml of pure alcohol

When you drink 300 ml glass: You are drinking 270 ml of pure alcohol. Please do not drink 300 ml. It is dangerous.

Almost all of your drink is pure alcohol.

So when you drink 100 ml absinthe: You are drinking 5 standard drinks.

So when you drink 300 ml absinthe: You are drinking 15 standard drinks. Please do not drink 300 ml. It is dangerous.