Gallons to Liters Converter
Convert gallons to liters free with our gallons to liters converter — 1 US gallon = 3.785 liters. This calculator uses US gallons; for UK Imperial gallons, 1 Imperial gallon = 4.546 litres.
Gallons to Liters
Convert US and UK gallons to liters quickly and accurately. Select your gallon type and enter a volume.
Liters (L)
0 L
US Gallon Conversion
Learn How to Convert Gallons to Liters
Want to understand how gallons are converted into liters? Learn the simple gallons to liters conversion formula with easy examples and step-by-step instructions. Our detailed guide explains how to convert different gallon values into liters accurately. Visit our How to Convert Gallons to Liters guide to learn the formula and see practical conversion examples.
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How to Convert Gallons to Liters
Converting gallons to liters is easy. Simply enter the number of US gallons into the calculator above to get the equivalent measurement in liters.
You can also calculate the result manually using a simple multiplication formula.
Gallons to Liters Formula
Liters = US Gallons × 3.785411784
Example: Convert 5 Gallons to Liters
To convert 5 US gallons into liters:
5 × 3.785411784 = 18.92705892 liters
Therefore, 5 US gallons is approximately 18.9271 liters.
This formula works for whole numbers, fractions, and decimal gallon values.
Gallons to Liters Conversion Chart
Use this US gallons to liters conversion chart to find common liquid volume measurements without performing manual calculations.
US Gallons | Liters |
|---|---|
1 | 3.7854 |
2 | 7.5708 |
3 | 11.3562 |
4 | 15.1416 |
5 | 18.9271 |
10 | 37.8541 |
15 | 56.7812 |
20 | 75.7082 |
25 | 94.6353 |
50 | 189.2706 |
All values are based on the US liquid gallon. Results are rounded to four decimal places.
What Is a Gallon and What Is a Liter?
A gallon and a liter are both units used to measure liquid volume.
A gallon is commonly used in the United States for measuring fuel, water, and other liquids. A liter is part of the metric system and is widely used in many countries around the world.
There are two common gallon measurements:
* US Liquid Gallon: Equal to 3.785411784 liters.
* Imperial Gallon: Equal to 4.54609 liters.
These measurements are not interchangeable. Always check which gallon standard you are using before converting.
Important: This calculator converts US liquid gallons by default. Choose UK Imperial Gallon in the dropdown for Imperial gallons.
US Gallons to Liters: Common Conversions
Here are some frequently searched gallon-to-liter conversions:
* 1 gallon = 3.7854 liters
* 2 gallons = 7.5708 liters
* 5 gallons = 18.9271 liters
* 10 gallons = 37.8541 liters
* 20 gallons = 75.7082 liters
* 50 gallons = 189.2706 liters
These examples can help when converting fuel capacity, water storage, household measurements, and other liquid quantities.
Why Use Our Gallons to Liters Converter?
Our free online calculator makes liquid volume conversion easier without requiring manual calculations.
Quick Results
Convert US gallons into liters in seconds.
Simple to Use
Enter a value and get the converted measurement.
Decimal Support
Convert values such as 1.5, 2.75, and 10.25 gallons.
Accurate Conversion
Uses the standard US liquid gallon conversion factor.
Free Online Access
Use the calculator without installing additional software.
More Gallon Examples
Here are more answers from the gallon unit converter above, for values people search for most:
* 2.5 gallons = 9.4635 liters
* 13 gallons = 49.2104 liters
* 17 gallons = 64.3520 liters
* 24 gallons = 90.8499 liters
* 55 gallons = 208.1976 liters
All values use the US liquid gallon (1 gallon = 3.785411784 liters). For an Imperial gallon, multiply by 4.54609 instead.
Liters to Gallons (Reverse Conversion)
This page converts gallons to liters. For the reverse, use our free Liters to Gallons converter. These are the reverse values people ask for most:
* 5 liters = 1.3209 US gallons
* 20 liters = 5.2834 US gallons
* 16 liters = 4.2268 US gallons
* 100 liters = 26.4172 US gallons
* 5000 liters = 1320.8603 US gallons
* 2 liters = 0.5283 US gallons
To convert liters to gallons yourself, divide the liter value by 3.785411784.
US Gallon vs Imperial Gallon
A US gallon and an Imperial gallon are not the same. One US gallon equals 3.785 litres, while one Imperial gallon equals 4.546 litres. So how many liters are in one gallon depends on which gallon you mean — always check before converting.
Canada used the Imperial gallon before going metric, so a Canadian gallon is 4.546 litres. A US gallon holds about 0.76 litres less. This converter lets you pick US or UK gallons, so the result always matches the gallon type you choose.
One US gallon also equals 4 US quarts. A quart is a quarter of a gallon, and 1 US quart equals approximately 0.946 liters.
Read more about the gallon’s history on Wikipedia’s Gallon page.
Frequently Asked Questions
One US liquid gallon is equal to exactly 3.785411784 liters (approximately 3.7854 liters). This converter uses the US liquid gallon measurement. An Imperial gallon has a different conversion value.
Multiply the number of US gallons by 3.785411784. For example, 5 gallons multiplied by 3.785411784 equals approximately 18.9271 liters.
5 US gallons equal approximately 18.9271 liters.
10 US gallons equal approximately 37.8541 liters.
20 US gallons equal approximately 75.7082 liters.
No. A US liquid gallon equals approximately 3.7854 liters, while an Imperial gallon equals approximately 4.5461 liters.
Yes. You can convert decimal values such as 1.5, 2.5, 5.75, or 10.25 gallons using the same conversion formula.
The formula is:
Liters = US Gallons × 3.785411784
Multiply the gallon value by this conversion factor to calculate the equivalent volume in liters.
Half of one US gallon equals approximately 1.8927 liters.
Yes. You can use our online Gallons to Liters Converter for free to calculate liquid volume conversions.
2.5 US gallons equal approximately 9.4635 liters.
17 US gallons equal approximately 64.3520 liters.
24 US gallons equal approximately 90.8499 liters.
55 US gallons equal approximately 208.1976 liters.
5 liters equal approximately 1.3209 US gallons. To convert liters to gallons, use our free Liters to Gallons converter.
Canada used the Imperial gallon, which equals 4.546 litres. A US gallon is smaller — 3.785 liters. So a Canadian (Imperial) gallon holds about 0.76 liters more than a US gallon.
1 US gallon equals 4 US quarts. A quart is a quarter of a gallon, and 1 US quart equals approximately 0.946 liters.
Convert Gallons to Liters Online
Need a quick and accurate way to convert liquid measurements? Use our free Gallons to Liters Converter to calculate US gallon values in liters.
Enter your measurement into the calculator above, get your result instantly, and save time on everyday volume conversions.
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