How Gallons to Liters Converter Works?
This tool works by multiplying US gallons by 3.78541. The result is the same volume in liters.
Enter US gallons
Type the volume in US gallons, for example 14 gallons.
Apply the factor
The tool multiplies by 3.78541 liters per gallon.
Read the liters
The tool returns the volume in liters.
Reverse when needed
Divide liters by 3.78541 to convert back to gallons.
Gallons to Liters Converter Formula
The formula is Liters = US Gallons × 3.78541.
Liters = US Gallons × 3.78541Formula variables
- US Gallons
- Volume in US liquid gallons.
- 3.78541
- Liters in 1 US gallon.
Worked example
- US Gallons: 14 gal
- Multiply 14 by 3.78541: 14 × 3.78541 = 52.996, shown as 53.00 liters.
Result: 53.00 (Liters)
1 imperial gallon equals 4.54609 liters. Use the US to Imperial Gallon Converter first for volumes given in imperial gallons.
Gallons to Liters Converter Conversion Table
The table lists liter equivalents for 7 common US gallon amounts.
| US Gallons (gal) | Result (Liters) |
|---|---|
| 1 gal | 3.79 |
| 5 gal | 18.93 |
| 10 gal | 37.85 |
| 14 gal | 53.00 |
| 15 gal | 56.78 |
| 20 gal | 75.71 |
| 25 gal | 94.64 |
A 5-gallon fuel can holds 18.93 liters, and a 20-gallon tank holds 75.71 liters.
What is Gallons to Liters Converter?
The Gallons to Liters Converter is a tool that converts US gallons into liters. The tool covers fuel volumes, tank sizes, and fluid capacities.
The US sells fuel by the gallon, while most other countries sell fuel by the liter. Travelers, importers, and engineers convert between the 2 units often.
The factor 3.78541 comes from the legal definition of the US gallon as 231 cubic inches.
What are the uses of Gallons to Liters Converter?
There are 4 main uses of the Gallons to Liters Converter: converting tank capacities, comparing fuel purchases abroad, sizing fuel cans, and converting vehicle fluid specs.
Converting tank capacities
Owners convert tank sizes for international listings.
Comparing fuel purchases abroad
Travelers convert liters pumped into familiar gallons.
Sizing fuel cans
Buyers convert 5-gallon cans into 20-liter equivalents.
Converting vehicle fluid specs
Mechanics convert coolant and oil capacities.
Need every metric in one place? Open the main MPG Cost Calculator or browse all 101 fuel calculators.