gallons to liters
Unit Converters
gallonsliters
1. US Liquid Gallon to Liters:
VolumeL
=
Volumegal(US) × 3.78541
2. Imperial (UK) Gallon to Liters:
VolumeL
=
Volumegal(UK) × 4.54609
Gallon to Liter Conversion Table
| Gallon [gal] | Liter [L] |
|---|---|
| 0.01 gal | 0.0378541253 L |
| 0.1 gal | 0.3785412534 L |
| 1 gal | 3.7854125343 L |
| 2 gal | 7.5708250685 L |
| 3 gal | 11.3562376028 L |
| 5 gal | 18.9270626713 L |
| 10 gal | 37.8541253426 L |
| 20 gal | 75.7082506852 L |
| 50 gal | 189.2706267129 L |
| 100 gal | 378.5412534258 L |
| 1,000 gal | 3,785.412534258 L |
What is gallons to liters?
Converting volume from gallons to liters (L) is a common requirement in international trade, automotive engineering, and daily travel. This conversion is particularly famous for being the source of much confusion, as the definition of a "gallon" changes depending on whether you are in the United States or the United Kingdom. Understanding the mathematical relationship between these units requires looking at two distinct conversion factors.
Understanding the Values
Gallon (gal): A unit of volume in the imperial and United States customary systems. The term "gallon" comes from the Old Northern French galon, which referred to a liquid measure.
Liter (L): The metric unit of volume. One liter is defined as the volume of a cube with 10 centimeter sides (1,000 cm³). It is the international standard for most liquid packaging.
3.785 vs 4.546: These constants represent the "size" of the container. If you fill a US gallon jug, it will take about 3.78 one-liter bottles to empty it. If you fill a British Imperial gallon jug, it will take about 4.54 bottles.
History and Origin
The history of the gallon-to-liter converter is a classic example of how history and taxes can change mathematics.
The Wine Gallon vs. The Ale Gallon
In medieval England, there wasn't just one "gallon." There was a "Wine Gallon" and a larger "Ale Gallon." When the British American colonies were established, they adopted the Queen Anne Wine Gallon (which was 231 cubic inches) as their standard. This is the origin of the modern US Gallon.
The British Reform of 1824
In 1824, the British Empire decided to clean up their messy system of different gallons. They abolished the wine and ale gallons and created a single Imperial Gallon. They chose to define it by the weight of water rather than cubic inches. Since the United States had already been independent for nearly 50 years, they did not adopt this change. This is why a "gallon" of gas in London is significantly larger than a "gallon" of gas in New York.
The Rise of the Liter
The liter was introduced in France in 1795. It was designed to be part of a purely decimal system. While the gallon is divided into 4 quarts, 8 pints, or 128 fluid ounces, the liter is simply 1,000 milliliters. As the world moved toward globalized manufacturing in the 20th century, the liter became the dominant unit for scientific and commercial use, forcing the US and UK to maintain precise mathematical conversion factors to keep their traditional "gallons" compatible with international standards.
What is Gallon?
Definition & Usage
The gallon (symbol: gal) is a unit of measurement for volume and fluid capacity in both the US customary units and the British imperial systems of measurement.
What is Liter?
Definition & Usage
The liter (symbol L or l) is the primary unit of measurement for the capacity of containers and liquid volume in the metric system, equal to one cubic decimeter (dm³ or 10 cm × 10 cm × 10 cm). It represents one thousandth of a cubic meter (m³).
Frequently Asked Questions
How accurate is this gallons to liters tool?
Our tools utilize high-precision floating point math guaranteeing accuracy up to the 6th decimal place.
Is this free to use?
Yes, all converters and calculators on ToolsMetrics are 100% free with no limits.