How to convert litres to US gallons
One litre equals 0.264172 US gallons, so multiply the number of litres by 0.264172:
US gal = L × 0.264172
L = US gal ÷ 0.264172 (1 US gal = 3.7854 L)
Example: 3.785 L → 3.785 × 0.264172 = 0.999891 US gal.
Going the other way, divide by 0.264172, or multiply by 3.7854; the US gallons to litres converter does it for you.
Everyday values
| Litres | US gallons | For example |
|---|---|---|
| 3.785 L | 0.999891 US gal | one US gallon |
| 10 L | 2.6417 US gal | a bucket |
| 20 L | 5.2834 US gal | a jerrycan |
| 50 L | 13.2086 US gal | a car fuel tank, roughly |
| 200 L | 52.8344 US gal | an oil drum (about 55 US gal) |
When you need this conversion
Fuel, water tanks and paint are typical reasons to convert litres to US gallons. A typical car fuel tank holds 40–70 litres (about 10.6–18.5 US gallons). Remember that a US gallon (3.785 L) is smaller than a UK gallon (4.546 L).
Litre to US gallon conversion table
| L | US gal | L | US gal |
|---|---|---|---|
| 1 L | 0.264172 US gal | 16 L | 4.2268 US gal |
| 2 L | 0.528344 US gal | 17 L | 4.4909 US gal |
| 3 L | 0.792516 US gal | 18 L | 4.7551 US gal |
| 4 L | 1.0567 US gal | 19 L | 5.0193 US gal |
| 5 L | 1.3209 US gal | 20 L | 5.2834 US gal |
| 6 L | 1.585 US gal | 21 L | 5.5476 US gal |
| 7 L | 1.8492 US gal | 22 L | 5.8118 US gal |
| 8 L | 2.1134 US gal | 23 L | 6.076 US gal |
| 9 L | 2.3776 US gal | 24 L | 6.3401 US gal |
| 10 L | 2.6417 US gal | 25 L | 6.6043 US gal |
| 11 L | 2.9059 US gal | 26 L | 6.8685 US gal |
| 12 L | 3.1701 US gal | 27 L | 7.1327 US gal |
| 13 L | 3.4342 US gal | 28 L | 7.3968 US gal |
| 14 L | 3.6984 US gal | 29 L | 7.661 US gal |
| 15 L | 3.9626 US gal | 30 L | 7.9252 US gal |
About the units
- Litre (L): one cubic decimetre (1,000 cm³).
- US gallon (US gal): 231 cubic inches, exactly 3.785411784 litres.
Both are units of volume. The conversion factor comes from the exact definitions above, so the calculator is exact; results are only rounded for display (up to six significant digits).
Frequently asked questions
How many US gallons are in one litre?
One litre is 0.264172 US gallons. One US gallon is 3.7854 litres.
How do I convert litres to US gallons?
Multiply the value in litres by 0.264172. To go back, divide by 0.264172.
What is 3.785 L in US gallons?
3.785 L = 0.999891 US gal.
What is 10 L in US gallons?
10 L = 2.6417 US gal.
Sources
- NIST Special Publication 811 (2008), Guide for the Use of the International System of Units (SI), Appendix B: conversion factors.
- NIST Handbook 44 (2024), Appendix C: General tables of units of measurement.
Last reviewed 5 October 2026. Results are estimates; see our disclaimer.