Convert gallons to liters and liters to gallons instantly with our free online volume converter. Perfect for cooking, fuel, and everyday measurements.
Converted value = Source value × Conversion factor
For affine conversions such as temperature, an offset is also applied.The tool applies the relevant factor or temperature offset to the source value. Currency outputs require a current exchange-rate source, while cooking volume-to-weight conversions can vary by ingredient density and measuring method.
Efficiently and precisely convert US gallons into litres. A US gallon is equal to 3.785411784 litres. Key a volume in gallons and its litres equivalent will be returned. US gallons to litres is ideal for fuel amounts, liquid volumes, recipes, containers etc.
To convert U.S. gallons to liters, multiply the number of gallons by 3.785411784.
For example, to convert 5 gallons to liters:
5 × 3.785411784 = 18.92705892 liters
For most everyday calculations, the result can be rounded to two decimal places: 5 U.S. gallons ≈ 18.93 liters.
The exact conversion formula is:
Liters = U.S. gallons × 3.785411784
Where:
There are actually two different Gallons: the US fluid gallon and the imperial gallon (used in England, Ireland and Canada). Theimperial gallonis bigger so it requires a different conversion value.
Suppose you have 12 U.S. gallons of liquid and want to express the volume in liters.
Starting value: 12 gallons
Conversion: 12 × 3.785411784
Calculation: 45.424941408 liters
Result: 12 U.S. gallons ≈ 45.42 liters
The unrounded calculation provides greater numerical precision, while 45.42 liters is generally easier to use for ordinary measurements.
| U.S. Gallons | Liters |
|---|---|
| 0.5 | 1.89 |
| 1 | 3.79 |
| 2 | 7.57 |
| 3 | 11.36 |
| 4 | 15.14 |
| 5 | 18.93 |
| 6 | 22.71 |
| 7 | 26.50 |
| 8 | 30.28 |
| 9 | 34.07 |
| 10 | 37.85 |
| 12 | 45.42 |
| 15 | 56.78 |
| 20 | 75.71 |
| 25 | 94.64 |
| 30 | 113.56 |
| 40 | 151.42 |
| 50 | 189.27 |
| 100 | 378.54 |
These values use the U.S. liquid gallon. If your measurement uses Imperial gallons, the result will be different.
The U.S. Liquid gallon, abbreviated gal and sometimes expressed as U.S. Gal, is the U.S. Customary unit of volume and is generally used when measuring fluids.
One U.S. liquid gallon contains 231 cubic inches and equals exactly 3.785411784 liters.
Liter (abbr L): A metric unit of volume used universally for measuring liquids and more.
There are 1,000 milliliters in a liter. In the metric system, the liter is also expressed in units such as square centimeters and cubic meters in order to measure a particular amount of capacity.
One U.S. liquid gallon equals exactly 3.785411784 liters, or approximately 3.79 liters when rounded to two decimal places.
Multiply the number of U.S. gallons by 3.785411784. For example, 8 gallons × 3.785411784 = 30.283294272 liters, or approximately 30.28 liters.
Five U.S. gallons equal 18.92705892 liters, which rounds to 18.93 liters.
Ten U.S. gallons equal 37.85411784 liters, or approximately 37.85 liters.
No. Because an U.S liquid gallon and an imperial gallon are different measures. One U.S. Gallon is 3.785 liters, while an imperial gallon is 4.546 liters.
Precision is dependent on need. Often, two decimal places for everyday volume measurements or calculations are just fine, but for laboratories, engineering, or even other similar needs, it might be necessary to go deeper with our decimal system.
Enter a known source value, confirm the direction of conversion and compare the result with the level of precision required. Keep extra decimal places for technical work and round only at the final step.