The Gallons to Liters Formula
To convert US gallons to liters, multiply by 3.78541.
Conversion Formula
Liters = US Gallons × 3.78541
Liters = UK Gallons × 4.54609
For quick estimation:
Liters ≈ US Gallons × 4
Try the Calculator
Use our free Gallons (US) to Liters converter for instant, accurate results.
🧪Convert gal → LGallons to Liters Calculator
Convert any volume from gallons to liters:
🧮Quick Calculator
1 gal = 0 L

Common Gallons to Liters Conversions
Quick reference table (US gallons):
| US Gallons | Liters | Context |
|---|---|---|
| 1 | 3.79 | Milk jug |
| 2 | 7.57 | 2 milk jugs |
| 5 | 18.9 | 5-gallon bucket |
| 10 | 37.9 | Gas tank |
| 15 | 56.8 | Large tank |
| 20 | 75.7 | Big container |
| 55 | 208 | Barrel |
❓Frequently Asked Questions
A US gallon contains approximately 3.785 liters. A UK gallon contains approximately 4.546 liters.
