Convert Liters to Gallons Instantly
Enter the volume in liters, select the gallon type, and press the conversion button. The calculator supports both US liquid gallons and UK Imperial gallons, because these units are not the same size.
For most US-based measurements, select US liquid gallon. However, choose UK Imperial gallon when the original measurement uses the British Imperial system.
Liters to Gallons Converter
Use the calculator above to convert liters to gallons quickly and accurately. First, enter the volume in liters. Then, select either US liquid gallons or UK Imperial gallons and start the conversion.
For a quick US conversion, multiply the number of liters by 0.264172. However, for an Imperial conversion, multiply the value by 0.219969.
The distinction is important because US and Imperial gallons are different sizes. Therefore, you should always identify the correct gallon type before calculating the result.
Liters to Gallons: Quick Answer
The most common conversion is from liters to US liquid gallons:
1 liter = 0.264172 US gallons
For UK Imperial measurements:
1 liter = 0.219969 Imperial gallons
Therefore, one liter is slightly more than one-quarter of a US gallon. In contrast, it is slightly less than one-quarter of an Imperial gallon.
The converter on this page supports both measurement systems. As a result, you can use it for American specifications as well as British Imperial measurements.
How to Convert Liters to Gallons
Converting liters into gallons requires only one multiplication. Nevertheless, you must use the correct conversion factor.
Liters to US Gallons Formula
Use the following formula for US liquid gallons:
US gallons = liters × 0.2641720524
Alternatively, divide the number of liters by 3.785411784:
US gallons = liters ÷ 3.785411784
For example, convert 5 liters to US gallons:
5 × 0.2641720524 = 1.320860262 US gallons
Therefore, 5 liters equals approximately 1.32086 US gallons.
Liters to Imperial Gallons Formula
Use this formula for UK Imperial gallons:
Imperial gallons = liters × 0.2199692483
Alternatively, divide the liter value by 4.54609:
Imperial gallons = liters ÷ 4.54609
For example, convert 20 liters to Imperial gallons:
20 × 0.2199692483 = 4.399384966 Imperial gallons
Consequently, 20 liters equals approximately 4.39938 Imperial gallons.
What Is a Liter?
A liter is a metric unit used to measure volume or capacity. Its standard symbol is L. More precisely, one liter is equal to one cubic decimeter.
The relationship between common metric volume units is:
1 L = 1 dm³ = 1,000 mL
Liters are commonly used for beverages, water, fuel, household containers, aquariums and cleaning products. In addition, manufacturers frequently use liters when listing the capacity of appliances, storage tanks and vehicle fuel tanks.
Because the metric system is based on powers of ten, liters are easy to convert into milliliters, centiliters and cubic meters. Therefore, the unit is convenient for both everyday and technical measurements.
What Is a Gallon?
A gallon is another unit of volume. However, the word “gallon” does not always refer to the same quantity.
US Liquid Gallon
The US liquid gallon is commonly used in the United States. For example, fuel, milk, water containers and vehicle tank capacities are often measured in US gallons.
One US liquid gallon equals:
1 US gallon = 3.785411784 liters
Therefore, converting liters to US gallons produces a larger numerical result than converting the same volume to Imperial gallons.
UK Imperial Gallon
The Imperial gallon is used in the British Imperial measurement system. Although it is less common in modern everyday use, it still appears in historical records, product specifications and some fuel-related measurements.
One Imperial gallon equals:
1 Imperial gallon = 4.54609 liters
As a result, an Imperial gallon is about 20% larger than a US liquid gallon.
US Gallons vs Imperial Gallons
The difference between the two gallon types can significantly affect a conversion.
For example:
- 10 liters = approximately 2.64172 US gallons
- 10 liters = approximately 2.19969 Imperial gallons
Although both results are correct, they represent different units. Therefore, a conversion result should always identify the gallon type.
Two websites may show different answers for the same liter value because one uses US gallons while the other uses Imperial gallons. Consequently, checking the measurement system is an essential part of an accurate conversion.
Which Gallon Type Should You Use?
Use the US liquid gallon when the original measurement comes from an American source. For example, American vehicles, fuel containers and water tanks usually use US gallons.
However, choose the Imperial gallon when a document, manual or product specification clearly refers to British Imperial measurements.
If the source only says “gallon,” consider its country and context. An American product specification will usually mean US liquid gallons. In contrast, an older British document may refer to Imperial gallons.
The calculator on this page does not use the less common US dry gallon. Instead, it focuses on the two gallon types most users encounter when converting liquid volume.
Why Convert Liters to Gallons?
A liters to gallons conversion is useful whenever metric and customary measurement systems appear together. In particular, it helps users understand international specifications and compare capacities more easily.
Fuel and Vehicle Capacities
Vehicle manufacturers often list fuel tank capacity in liters. However, drivers in the United States may be more familiar with gallons.
For example, a 50-liter fuel tank holds approximately 13.21 US gallons. Therefore, converting the capacity can help a driver understand how much fuel the vehicle can hold.
Nevertheless, fuel tank capacity should not be confused with fuel economy. Liters and gallons measure volume, whereas liters per 100 kilometers and miles per gallon measure fuel consumption.
Aquariums and Water Storage
Aquarium tanks, rain barrels and water storage containers may use different units depending on the manufacturer. As a result, users often need to convert between liters and gallons before choosing equipment.
For example, filters and pumps may be rated for a specific number of gallons. Meanwhile, the tank itself may show its capacity in liters. Therefore, an accurate conversion helps users select equipment designed for the correct volume.
Travel and International Products
Travelers regularly encounter unfamiliar measurement systems. For instance, a rental vehicle may display its fuel capacity in liters, even though the driver normally uses gallons.
In addition, imported garden equipment, appliances and liquid containers may use metric specifications. Consequently, converting liters to gallons makes product comparison easier.
Commercial and Industrial Uses
Agriculture, manufacturing, laboratories and commercial kitchens often handle large liquid quantities. Although professional applications may require greater precision, the basic conversion formula remains the same.
For example, businesses may need to convert storage capacity, production volume or liquid delivery quantities. Therefore, reliable conversion data can support planning, purchasing and record keeping.
How Accurate Should the Result Be?
The required level of precision depends on how the converted value will be used.
Everyday Estimates
For everyday comparisons, two decimal places are usually sufficient.
For example:
25 liters ≈ 6.60 US gallons
This level of precision is generally suitable for estimating container size, aquarium capacity or vehicle fuel volume.
Technical Measurements
For equipment specifications, purchasing or technical work, four to six decimal places may be more appropriate.
For example:
25 liters = 6.604301 US gallons
Whenever possible, keep the available digits during the calculation. Then, round only the final result. This method reduces the risk of accumulated rounding errors.
The calculator above follows this approach. Therefore, it calculates with a more precise conversion factor before formatting the displayed result.
Common Liters to Gallons Conversion Mistakes
Even though the calculation is simple, several common mistakes can produce an incorrect result.
Using the Wrong Gallon Type
A US gallon is smaller than an Imperial gallon. Therefore, selecting the wrong unit can noticeably change the answer.
Dividing by the Wrong Number
To calculate US gallons, divide liters by 3.785411784. However, for Imperial gallons, divide liters by 4.54609.
Rounding Too Early
Rounding the conversion factor before completing the calculation can reduce accuracy. Instead, keep several decimal places and round only the final result.
Confusing Volume and Fuel Economy
Liters and gallons measure volume. In contrast, L/100 km and mpg measure fuel consumption. Therefore, converting between these fuel economy units requires a different formula.
Assuming Every Gallon Is the Same
The term “gallon” can refer to different units. Consequently, the result should always specify whether it uses US liquid gallons or Imperial gallons.
Liters to Gallons Conversion Chart
The following chart converts liters into both US liquid gallons and UK Imperial gallons. The results are rounded to five decimal places for easier comparison.
| Liters | US liquid gallons | UK Imperial gallons |
|---|---|---|
| 1 L | 0.26417 US gal | 0.21997 Imp gal |
| 10 L | 2.64172 US gal | 2.19969 Imp gal |
| 20 L | 5.28344 US gal | 4.39938 Imp gal |
| 30 L | 7.92516 US gal | 6.59908 Imp gal |
| 40 L | 10.56688 US gal | 8.79877 Imp gal |
| 50 L | 13.20860 US gal | 10.99846 Imp gal |
| 60 L | 15.85032 US gal | 13.19815 Imp gal |
| 70 L | 18.49204 US gal | 15.39785 Imp gal |
| 80 L | 21.13376 US gal | 17.59754 Imp gal |
| 90 L | 23.77548 US gal | 19.79723 Imp gal |
| 100 L | 26.41721 US gal | 21.99692 Imp gal |
One liter equals approximately 0.264172 US liquid gallons. It also equals approximately 0.219969 UK Imperial gallons.
Ten liters equals approximately 2.64172 US liquid gallons.
Ten liters equals approximately 2.19969 UK Imperial gallons.
No. One US liquid gallon equals 3.785411784 liters, while one Imperial gallon equals 4.54609 liters. Therefore, the Imperial gallon is larger.
Multiply liters by 0.2641720524 for US liquid gallons. Alternatively, multiply by 0.2199692483 for UK Imperial gallons.
Not exactly. One liter is about 0.264 US gallons, so it is slightly more than one-quarter of a US gallon. However, it is about 0.220 Imperial gallons, which is less than one-quarter of an Imperial gallon.
No. The mathematical unit conversion is the same for every substance. A liter of water, fuel or another liquid converts into the same number of gallons.
Yes. The calculator accepts decimal values, including numbers such as 0.5, 2.75 or 18.6 liters. You can enter either a decimal point or a decimal comma.
