Gallons to Liters (gal to L) Converter & Formula
1 US gallon equals 3.785412 liters — multiply the number of gallons by 3.785412 to convert to liters. This is the key conversion between US customary volume and the metric system. ByteTools applies the exact factor as you type.
The formula
To convert gallons to liters, multiply by 3.785412:
L = gal × 3.785412
For example, 10 gallons × 3.785412 = 37.85412 liters. To reverse it, divide by 3.785412 (or multiply liters by 0.26417205).
Conversion table
| Gallons (gal) | Liters (L) |
|---|---|
| 1 | 3.785412 |
| 2 | 7.570824 |
| 5 | 18.927059 |
| 10 | 37.854118 |
| 25 | 94.635294 |
| 50 | 189.270589 |
| 100 | 378.541178 |
| 500 | 1892.705892 |
| 1000 | 3785.411784 |
How to convert online
- Type the number of gallons into the first box.
- Read the liters result instantly in the second box.
- Type a liter value instead to convert back to gallons — it works both ways.
Use the Gallon to Liter Converter — free and instant in your browser.
Where this conversion is used
Gallons-to-liter conversions are common in fuel economy, automotive fluids, brewing and homebrewing, aquariums and international shipping of liquids. US quantities in gallons often need to be expressed in liters used almost everywhere else, and this factor bridges the gap.
FAQ
How many liters are in a gallon?
One US gallon equals 3.785412 liters. So 10 gallons is about 37.85 L and 100 gallons is about 378.54 L.
What is the formula to convert gallons to liters?
Multiply gallons by 3.785412: L = gal × 3.785412. The converter applies this factor automatically.
How do I convert liters back to gallons?
Divide by 3.785412, or multiply liters by 0.26417205. For example, 1 liter = 0.264 gallon.
Is this the US or imperial gallon?
This converter uses the US gallon (3.785412 L). The UK imperial gallon is larger, at about 4.546 liters.
Related converters
- Liter to Gallon Converter
- Gallon to Milliliter Converter
- Gallon to Cubic Meter Converter
- Gallon to Cup Converter
Built by ByteVancer
ByteTools is a free product of ByteVancer, a software and web development studio. If you need a custom web app, calculator or internal tool built for your business, ByteVancer can help — explore our services and get in touch.
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