Gallons to Liters Converter
Need to convert gallons to liters fast? You're in the right place. Use the converter below to instantly get results, see conversion formulas, and check popular values – all in one place.
Want to convert liters to gallons instead? Try our liters to gallons converter.
How to Convert gallons to liters
To convert US gallons to liters, multiply the number of gallons by 3.78541. This is because one US gallon equals exactly 3.78541 liters.
Formula: liters = gallons × 3.78541
Example: 10 gal × 3.78541 = 37.8541 L
Gallons to Liters Conversion Table
| Gallons (US gal) | Liters (L) |
|---|---|
| 1 gal | 3.7854 L |
| 5 gal | 18.9271 L |
| 10 gal | 37.8541 L |
| 20 gal | 75.7082 L |
| 50 gal | 189.271 L |
| 100 gal | 378.541 L |
What is a Gallon?
A US gallon (gal) is a unit of volume used in the United States. One US gallon equals exactly 3.78541 liters. Note: The UK gallon is different (4.54609 L).
What is a Liter?
A liter (L) is a metric unit of volume equal to one cubic decimeter (dm³), or 1,000 milliliters. Liters are commonly used to measure liquids and beverages worldwide.
FAQ – Gallons to Liters
- How many liters is 1 gallon?
- 1 US gallon is exactly 3.78541 liters.
- How do you convert 10 gallons to liters?
- Multiply 10 by 3.78541. The result is 37.8541 liters.
- Is 1 US gallon exactly 3.78541 liters?
- Yes, by international agreement, 1 US gallon is defined as exactly 3.78541 liters.
- Can I use this converter on mobile?
- Yes! This converter is mobile-friendly and works on any device.
- Is this tool free?
- Absolutely. You can use this converter as much as you like – it's completely free.
Looking to convert the other way? Try our liters to gallons converter.