# How to Convert a Beer Barrel to Gallons

Written by diana braun
• Share
• Tweet
• Share
• Pin
• Email

A barrel is a hollow cylindrical container used as a standard size of measure. Barrels are often used to store various liquids, including water, whiskey, wine and beer. The modern U.S. beer barrel holds 31 gallons. Beer is typically delivered in full, half and quarter barrels. A half barrel is often referred to as a keg of beer and equals 15.5 gallons. An online beer barrel converter or a calculator can be used to determine how many gallons of beer are left in the barrel.

Skill level:
Easy

• Scale
• Calculator

## Using a Calculator

1. 1

Determine how much beer is left in the barrel by weighing the barrel of beer on a scale. A full barrel of beer weighs between 145 and 150 Kilogram.

2. 2

Divide the weight of the beer in the barrel by 150 Kilogram to get the percentage of beer left in the barrel.

3. 3

Multiply the percentage from dtep 2 by 31 gallons (the number of gallons in a full barrel of beer) to get the number of gallons of beer left in the barrel.

## Using an Online Conversion Tool

1. 1

Set the barrel of beer on a scale to find its weight and determine how much beer is left in the barrel. Again, a full barrel of beer is between 145 and 150 Kilogram.

2. 2

Divide the weight of the beer in the barrel by the full barrel weight to find out what percentage of beer is left in the barrel.

3. 3

Use an online unit converter to determine the number of gallons of beer in the barrel. A simple converter can be found in the Resources section.

4. 4

Enter the amount of beer as a fraction of the whole rather than a percentage. If you think approximately three-quarters of the barrel is left, enter ".75" in the "Barrel" field of the converter.

5. 5

Click the "Convert" button. The number of U.S. gallons of beer left in the barrel will be displayed.

### Don't Miss

#### Resources

• All types
• Articles
• Slideshows
• Videos
##### Sort:
• Most relevant
• Most popular
• Most recent