Liters to Gallons Converter - L to Gal Calculator
Convert liters to US or Imperial gallons with exact constants, quick reference values, and practical secondary units.
Liters to Gallons Converter
Results
What is the Liters to Gallons Converter?
The liters to gallons converter changes metric liquid volume into US or Imperial gallons for fuel tanks, aquariums, recipes, containers, and everyday measurement checks. It is useful whenever a label, specification, or instruction uses liters but your comparison number uses gallons.
Use it to convert fuel tank capacity, bottled liquids, aquarium volume, pool treatments, cleaning products, storage containers, and batch sizes. You can also reverse the direction when a US gallon value needs to be written in liters.
The default is liters to US gallons, because US liquid gallons are common for American fuel and household liquid measurements. The Imperial option is included for UK, older Canadian, marine, and historical references where a gallon is larger.
For a broader unit list, use our Volume Converter to compare liters, gallons, quarts, cups, cubic feet, and more.
How the Liters to Gallons Conversion Works
The liters to gallons conversion formula depends on which gallon you choose:
For example, 10 liters divided by 3.785411784 equals about 2.6417 US gallons. The same 10 liters equals about 2.1997 Imperial gallons because an Imperial gallon holds more liquid.
According to NIST Guide to the SI Appendix B.9, a US gallon converts to 3.785412 liters and an Imperial gallon converts to 4.54609 liters.
If you want to focus only on gallon-based quantities, try our Gallon Calculator for more gallon volume breakdowns.
Key Concepts Explained
These concepts help you choose the right standard before using a liters to gallons calculator result in the real world.
US gallon vs imperial gallon
A US liquid gallon is 3.785411784 liters, while an Imperial gallon is 4.54609 liters. Choosing the wrong gallon standard changes the answer by about one fifth.
Liter
A liter is a metric volume unit equal to one cubic decimeter. It is common on fuel, beverage, chemical, water, and laboratory labels.
Bidirectional conversion
The same constant works in both directions. Divide liters by the selected constant to get gallons, or multiply gallons by the constant to get liters.
Practical rounding
Everyday results usually need two to four decimal places. Technical work should keep more precision and match the original measurement.
For container dimensions that start in feet instead of liters, use our Cubic Feet Calculator before converting volume units.
How to Use This Calculator
- 1Choose whether you want to convert liters to gallons or gallons to liters.
- 2Enter the amount from your fuel tank, container label, aquarium note, or recipe.
- 3Select US liquid gallons or Imperial gallons.
- 4Set the number of decimal places you want for the displayed answer.
- 5Review the primary result, secondary units, and formula line before using the number.
If your liter amount is part of a miles-per-gallon or liters-per-100-kilometers problem, use our Fuel Economy Converter next.
Common Liters to Gallons Conversions
| Liters | US Gallons | Imperial Gallons |
|---|---|---|
| 1 L | 0.2642 gal | 0.2200 imp gal |
| 5 L | 1.3209 gal | 1.0998 imp gal |
| 10 L | 2.6417 gal | 2.1997 imp gal |
| 20 L | 5.2834 gal | 4.3994 imp gal |
| 50 L | 13.2086 gal | 10.9985 imp gal |
| 100 L | 26.4172 gal | 21.9969 imp gal |
This liters to gallons chart is best for quick estimates. Use the calculator above when you need a custom value or more decimal places.
Benefits and Factors That Affect Results
• Compare fuel tank sizes listed in liters with US pump, mileage, or fuel-cost numbers.
• Use gallon-based aquarium treatments, pool chemicals, and water-conditioner instructions with metric tank sizes.
• Convert shipping, packaging, and liquid storage volumes without manually searching for the factor.
• Spot US-versus-Imperial gallon differences before copying a result into a recipe or technical note.
Gallon standard is the biggest factor. US liquid gallons are common in the United States, while Imperial gallons appear in UK, older Canadian, and some marine or historical contexts.
Input precision also matters. A label that says 10 L may already be rounded, so avoid presenting more certainty than your starting value supports.
NIST Handbook 44 describes the liter as a special name for the cubic decimeter in metric liquid volume tables.
If you need gallons to pounds or kilograms, use our Weight Converter only after you know the liquid density.
Frequently Asked Questions
How many gallons are in a liter?
One liter equals about 0.264172 US gallons. If you choose Imperial gallons, one liter equals about 0.219969 Imperial gallons. The difference matters because an Imperial gallon is larger than a US liquid gallon.
How do you convert liters to gallons?
For US liquid gallons, divide liters by 3.785411784. For Imperial gallons, divide liters by 4.54609. The calculator does that automatically after you choose the gallon standard.
How many gallons is 50 liters?
50 liters equals about 13.2086 US gallons. If you use Imperial gallons, 50 liters equals about 10.9985 Imperial gallons. Use the standard that matches your fuel, tank, or recipe source.
Is this converter using US or Imperial gallons?
The default result uses US liquid gallons because that is the common gallon used for US fuel and household liquid measurements. You can switch to Imperial gallons when working with UK or older Commonwealth references.
How many liters are in one gallon?
One US liquid gallon equals exactly 3.785411784 liters. One Imperial gallon equals about 4.54609 liters. The reverse conversion multiplies gallons by the selected liters-per-gallon constant.
Can I use this for fuel tanks, aquariums, and recipes?
Yes. The conversion is volume-based, so it works for fuel tanks, aquariums, pools, recipes, beverages, and containers. For weight questions, such as gallons to pounds, you need the liquid density too.