Liters to Gallons Converter
Convert between liters and gallons instantly. Supports both US gallons (3.785 L) and Imperial/UK gallons (4.546 L). Includes fuel, cooking, and capacity references.
Liters → Gallons
Gallons → Liters
Liters to Gallons Conversion Table
| Liters | US Gallons | Imperial Gallons | Liters | US Gallons | Imperial Gallons |
|---|---|---|---|---|---|
| 1 | 0.264 | 0.220 | 20 | 5.283 | 4.399 |
| 2 | 0.528 | 0.440 | 25 | 6.604 | 5.499 |
| 3.785 | 1.000 | 0.833 | 30 | 7.925 | 6.599 |
| 5 | 1.321 | 1.100 | 40 | 10.567 | 8.799 |
| 10 | 2.642 | 2.200 | 50 | 13.209 | 10.998 |
| 15 | 3.963 | 3.299 | 100 | 26.417 | 21.997 |
Common Volume References
| Item | Liters | US Gallons | Notes |
|---|---|---|---|
| Water Bottle (standard) | 0.5 | 0.13 | 16.9 fl oz |
| Large Water Bottle | 1.0 | 0.26 | 33.8 fl oz |
| Milk Jug (US) | 3.785 | 1.00 | Standard gallon |
| Car Gas Tank (sedan) | 50 – 60 | 13 – 16 | Varies by model |
| Car Gas Tank (SUV/truck) | 75 – 100 | 20 – 26 | Varies by model |
| Standard Bathtub | 150 – 300 | 40 – 80 | Typical fill level |
| Hot Tub (4-person) | 1,135 | 300 | Average capacity |
| Residential Pool | 56,800 | 15,000 | 12×24 ft, 5 ft deep |
| Olympic Swimming Pool | 2,500,000 | 660,430 | 50m × 25m × 2m |
Understanding Liters and Gallons
The liter (L) is the standard metric unit of volume, defined as exactly 1 cubic decimeter (1,000 cubic centimeters or 1,000 milliliters). The US gallon is defined as exactly 231 cubic inches (3.785411784 liters). The Imperial gallon, used in the UK and some Commonwealth countries, is larger at 4.54609 liters — about 20% more than a US gallon. This difference matters for fuel economy (a car getting "40 MPG" in the UK is getting only 33.3 MPG by US measurement), cooking recipes from British sources, and any international shipping of liquids.
The US is one of the few countries that doesn't use liters as the primary volume measurement. Fuel is sold in gallons (vs liters everywhere else), milk in gallons (vs liters), and engine displacement in liters (one rare metric holdout in the US auto industry). For fuel cost calculations, use our Gas Mileage Calculator. For daily water intake recommendations, see our Water Intake Calculator.
US Gallon vs Imperial Gallon
The US gallon (128 fl oz, 3.785 L) and Imperial gallon (160 fl oz, 4.546 L) are different units that share the same name — a common source of confusion. The Imperial gallon was originally defined as the volume of 10 pounds of water at 62°F. The US gallon was based on the English wine gallon of 231 cubic inches. When comparing fuel economy, a "50 MPG" car in the UK would only achieve about 41.6 MPG by US standards because Imperial gallons are larger.
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