Liters to US GallonsFree online conversion calculator — instant results, no sign-up
Convert liters to US gallons and back.
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About the Liters to US Gallons
The Liters to US Gallons calculator converts a volume in liters to US liquid gallons and shows the reverse conversion relationship. With the default input of 1 liter, it reports 0.264172 US gallons. It uses the US liquid gallon, not the Imperial gallon or US dry gallon.
- Value in liters (liters)
- The volume to convert, measured in liters, with a default value of 1.
Formula and method
G = L / 3.785411784; reverse conversion: L = G × 3.785411784.
- LVolume in liters.
- GVolume in US liquid gallons.
Divide the entered volume in liters by 3.785411784, the exact number of liters in one US liquid gallon. Round the displayed result to six decimal places, as in the worked example: 1 liter gives 0.264172 US gallons. The reverse relationship uses multiplication and displays 1 US gallon as 3.785412 liters.
Worked example
These are the calculator's starting values and the results it actually produces for them.
Inputs
- Value in liters1 liters
Results
- US gallons0.264172
- 1 liters =0.264172 US gallons
- 1 US gallons =3.785412 liters
How to use the Liters to US Gallons
- 1Enter the volume in the Value in liters (liters) field, or leave the default value of 1.
- 2Read the US gallons result calculated from the entered liter value.
- 3Check the forward conversion row: with the default input, 1 liter equals 0.264172 US gallons.
- 4Read the reverse relationship row: 1 US gallon equals 3.785412 liters.
- 5To convert a gallon quantity back to liters, multiply it by the full conversion factor, 3.785411784.
Reading your result
The “US gallons” output is the converted volume; for the default input it is 0.264172. The forward row, shown as “1 liters = = 0.264172 US gallons,” expresses the same result as an equality. The reverse row, shown as “1 US gallons = = 3.785412 liters,” gives the liter equivalent of one US liquid gallon, rather than converting the forward result back. The repeated equals signs are display formatting and have no additional mathematical meaning.
Limitations
This conversion applies only to US liquid gallons. Displayed values are rounded to six decimal places, so using them in further calculations may introduce small rounding differences; use the full factor when precision matters. The calculation converts volume only, not mass, and does not adjust for temperature-related changes in a substance's volume. The listed input accepts liters; the reverse relationship provides the factor for converting gallons back to liters.
Common questions
Does this calculator use US or Imperial gallons?+
It uses US liquid gallons, with exactly 3.785411784 liters per gallon. Its results should not be read as Imperial gallons or US dry gallons.
Why does the default input of 1 liter produce 0.264172 US gallons?+
One liter is divided by 3.785411784 liters per US liquid gallon. The result rounds to 0.264172 US gallons at six decimal places.
How do I convert US gallons back to liters?+
Multiply the volume in US liquid gallons by 3.785411784. The reverse row shows this relationship rounded to six decimal places: 1 US gallon equals 3.785412 liters.
Is 3.785412 the exact number of liters in a US gallon?+
No. It is the displayed, rounded value. The exact conversion factor is 3.785411784 liters per US liquid gallon.
Does the calculator save my information?+
Calculations run in your browser. While signed in, inputs and results are automatically recorded in account history; saving a result creates a separate saved record.
Further reading
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Results are estimates for informational purposes and are not financial, medical or legal advice.