Gallons to Liters Calculator

Convert volumes from US gallons (gal) to liters (L) with this easy-to-use calculator. Whether you’re cooking with international recipes, calculating fuel consumption, or working with different measurement systems, this tool helps you quickly convert between these common units of volume measurement.

Understanding Gallons and Liters

Gallons and liters are both units of volume measurement, but they’re used in different parts of the world:

• US Gallons (gal): Primarily used in the United States
• Liters (L): Used in most countries and is the standard metric unit for volume

The relationship between US gallons and liters is fixed: 1 US gallon = 3.78541 liters

This means that to convert from gallons to liters, you multiply the number of gallons by 3.78541.

$\text{Liters} = \text{Gallons} \times 3.78541$

Common Conversions

Here are some commonly used conversions:

• 1 gallon = 3.79 liters
• 5 gallons = 18.93 liters
• 10 gallons = 37.85 liters
• 20 gallons = 75.71 liters
• 50 gallons = 189.27 liters
• 100 gallons = 378.54 liters

How to Use This Calculator

1. Enter the volume in US gallons in the input field
2. The equivalent volume in liters will be automatically calculated
3. Use the “Copy Result” button to copy the converted value
4. Click “Reset” to clear both fields and start a new conversion

Practical Applications

This calculator is particularly useful for:

• Cooking and recipe conversions
• Fuel consumption calculations
• Pool and aquarium maintenance
• Industrial liquid measurements
• International shipping of liquids
• Water usage calculations

Tips for Accurate Conversion

• Always double-check your input value
• For precise calculations, the result is rounded to 2 decimal places
• Remember that this calculator uses US gallons, not Imperial gallons
• The standard conversion factor of 3.78541 is used for accuracy

Technical Notes

The conversion uses the internationally recognized standard where 1 US gallon equals exactly 3.78541 liters. This is different from the Imperial gallon (used in the UK and some other countries), which equals 4.54609 liters.

For most practical purposes, using 3.79 as a conversion factor is sufficient for quick mental calculations.

Note: This calculator specifically converts US gallons to liters. If you’re working with Imperial gallons, the conversion factor would be different.