How to convert US gallons to liters
1 gal (US) = 3.785411784 L
1 US gallon = 231 cubic inches = 3.785411784 L exactly (NIST Handbook 44). The imperial (UK) gallon is 4.54609 L exactly (UK Weights and Measures Act 1985).
Examples
- 1 gal (US) = 3.7854118 L: A gallon jug of milk or water
- 5 gal (US) = 18.927059 L: A large paint or utility bucket
- 12 gal (US) = 45.424941 L: A fuel fill-up at a US pump
Gallons to liters chart
| US gallons (gal (US)) | Liters (L) |
|---|---|
| 1 gal (US) | 3.7854118 L |
| 2 gal (US) | 7.5708236 L |
| 3 gal (US) | 11.356235 L |
| 4 gal (US) | 15.141647 L |
| 5 gal (US) | 18.927059 L |
| 10 gal (US) | 37.854118 L |
| 12 gal (US) | 45.424941 L |
| 15 gal (US) | 56.781177 L |
| 20 gal (US) | 75.708236 L |
| 25 gal (US) | 94.635295 L |
| 50 gal (US) | 189.27059 L |
| 75 gal (US) | 283.90588 L |
| 100 gal (US) | 378.54118 L |
Common mistakes
- US and imperial gallons differ by about 20%. Check which gallon a figure uses before converting, especially for UK or Canadian sources.
- The gallon here is a liquid gallon. US dry measures (dry pints, quarts, pecks) are separate units.