Gallons to Liters Conversion Calculator

Gallon (gal) to Liter (L) Converter

Symbol: gal (gallon), L (liter)

The gallon and liter are units of volume measurement, with the gallon being part of the imperial/US system and the liter being part of the metric system (SI).

Formula: 1 US gallon = 3.78541 liters

Common Conversions:

  • 1 gal = 3.785 L
  • 5 gal = 18.93 L
  • 10 gal = 37.85 L
  • 1 L = 0.264 gal
  • 1 Imperial gal = 4.546 L

Gallon (US) (gal)
Liter (L)

Conversion Result

1 gal=
1.000 L

Use the converter above to calculate different values and units

What are Volume Measurements?

Volume measurements quantify the amount of space occupied by substances, most commonly liquids. The gallon (gal) is the standard volume unit in the imperial and US customary systems, while the liter (L) is the primary unit of volume in the metric system.

It's important to note that there's a distinction between US gallons and imperial (UK) gallons. This converter uses US gallons, which equal 231 cubic inches or about 3.785 liters. In contrast, imperial gallons equal 277.4 cubic inches or about 4.546 liters.

Learn more from Bureau International des Poids et Mesures (BIPM) or NIST.

Common Gallon to Liter Conversions

US Gallons (gal)Liters (L)Common Reference
0.261Large water bottle
0.532Large soda bottle
13.79US gallon milk jug
1.064Standard paint can
2.6410Office water cooler bottle
5.2820Small aquarium
13.2150Compact washing machine
26.42100Bathtub capacity

Practical Use Cases

  • Fuel Purchases: Converting between gallons (US) and liters when traveling from the US to countries that use the metric system
  • Cooking and Baking: Converting US recipes with gallon measurements to metric units for international use
  • Aquarium Maintenance: Converting aquarium sizes from US gallons to liters for international products
  • Swimming Pool Management: Converting pool chemical dosages between US and metric instructions
  • Automotive Fluids: Understanding vehicle specifications when traveling internationally or importing vehicles
  • Water Consumption: Comparing US water usage (gallons) to international standards (liters)

Educational Resource

This educational video explains the relationship between gallons and liters and demonstrates how to convert between these units with practical examples and applications.

Conversion Tools

Download Conversion Chart (PDF)

Get our comprehensive gallons to liters conversion chart for quick reference when you're offline.

Gallons to Liters Conversion FAQs

Find answers to common questions about converting between gallons and liters.