Gallons to Liters Converter
Convert beer and beverage volume measurements from US gallons to liters quickly and accurately. Essential for international brewing, recipe conversion, and understanding metric beer volumes used worldwide.
Common Gallons to Liters Conversions
| Gallons (US) | Liters |
|---|---|
| 0.5 gallon | 1.89 liters |
| 1 gallon | 3.785 liters |
| 2 gallons | 7.571 liters |
| 5 gallons | 18.927 liters |
| 7.75 gallons (quarter barrel) | 29.34 liters |
| 10 gallons | 37.854 liters |
| 15.5 gallons (half barrel) | 58.67 liters |
| 20 gallons | 75.708 liters |
| 31 gallons (full barrel) | 117.35 liters |
| 50 gallons | 189.271 liters |
How to Convert Gallons to Liters
Converting gallons to liters is essential when working with international brewing recipes, understanding metric beer labels, or communicating with breweries outside the United States. The liter is the standard unit of volume in most countries and is used in scientific brewing calculations worldwide.
The Conversion Formula
The formula to convert US gallons to liters is:
This conversion factor is based on the definition that 1 US gallon equals exactly 3.785411784 liters.
Example 1: Converting 5 Gallons to Liters
liters = 5 x 3.78541 = 18.927 liters
A standard 5-gallon homebrew batch is approximately 19 liters.
Example 2: Converting 15.5 Gallons to Liters
liters = 15.5 x 3.78541 = 58.67 liters
A half-barrel keg holds about 59 liters of beer.
US Gallon vs Imperial Gallon
Important: This converter uses US gallons, not Imperial (UK) gallons. The difference is significant:
- 1 US gallon = 3.785 liters
- 1 Imperial gallon = 4.546 liters
- Imperial gallon is about 20% larger than US gallon
Common Beer Volumes in Liters
Understanding standard beer volumes in the metric system:
- 330 mL: Standard European beer bottle
- 500 mL: Half-liter bottle or can, common in Germany
- 568 mL: Imperial pint (UK)
- 1 liter: Masskrug (German beer stein)
- 20 liters: Common homebrewing batch size in metric countries
- 50 liters: Standard European keg size
Homebrew Batch Sizes
Common homebrew batch sizes in both systems:
- 1 gallon = 3.79 liters (beginner batches)
- 5 gallons = 18.93 liters (standard US batch)
- 10 gallons = 37.85 liters (larger batches)
- 20 liters = 5.28 gallons (common metric batch)
- 23 liters = 6.08 gallons (standard metric kit)
Applications of This Conversion
Recipe Conversion: When adapting recipes from American to metric or vice versa, accurate volume conversion ensures the correct ratios of ingredients.
International Trade: Breweries exporting or importing beer need to convert between US gallons and liters for labeling and regulatory compliance.
Equipment Sizing: Many brewing equipment specifications use liters, requiring conversion when purchasing from international suppliers.
Scientific Calculations: Brewing chemistry calculations often use metric units, requiring conversion from gallon-based measurements.