How to convert liters to US gallons
1 US gal = 3.785411784 L (exact)
US gallons = liters ÷ 3.785411784
1 imperial gal = 4.54609 L (exact)
Shortcut: Divide by 4 and add 5%: 20 L ≈ 5 + 0.25 = 5.25 US gal (exactly 5.28).
Liters to gallons table
| Liters | US gallons |
|---|---|
| 0.5 L | 0.1321 US gal |
| 1 L | 0.2642 US gal |
| 1.5 L | 0.3963 US gal |
| 2 L | 0.5283 US gal |
| 3 L | 0.7925 US gal |
| 4 L | 1.0567 US gal |
| 5 L | 1.3209 US gal |
| 10 L | 2.6417 US gal |
| 15 L | 3.9626 US gal |
| 20 L | 5.2834 US gal |
| 25 L | 6.6043 US gal |
| 30 L | 7.9252 US gal |
| 40 L | 10.5669 US gal |
| 50 L | 13.2086 US gal |
| 60 L | 15.8503 US gal |
| 75 L | 19.8129 US gal |
| 100 L | 26.4172 US gal |
| 200 L | 52.8344 US gal |
| 500 L | 132.086 US gal |
| 1,000 L | 264.1721 US gal |
Values are calculated with exact factors and rounded for the table; the converter above shows full precision.
Worked examples
1 L to US gallons
1 ÷ 3.785411784
0.2642 US gal
20 L to US gallons
20 ÷ 3.785411784
5.2834 US gal
100 L to US gallons
100 ÷ 3.785411784
26.4172 US gal
Questions
How many gallons is 1 liter?
About 0.264 US gallons, or 0.220 imperial gallons.
How many liters are in a gallon?
A US gallon is exactly 3.785411784 L; an imperial (UK) gallon is exactly 4.54609 L.
How many gallons is 20 liters?
About 5.28 US gallons.
Related conversions
- US gallons to liters (the reverse)
- Milliliters to US fluid ounces
- US cups to milliliters
- Volume converter: every volume unit, with the full drawing
The history: Why a US gallon is smaller than a British gallon.