Gallons to Litres Converter (gal to L)
US gallons convert to litres by multiplying by 3.785411784. A 15-gallon fuel tank holds about 56.8 litres.
Convert units
Instant calculation in your browser. No sign-up or upload.
1 gal = 3.785411784 L
Calculation working
- Result = input × source factor ÷ target factor
- 1 × 3.785411784 ÷ 1 = 3.785411784 L
- Factors refer to the same base quantity. Rounding is applied to the display, not intermediate calculations.
Display: 10 significant digits. More digits do not make the original measurement more accurate.
Try a practical example
Batch conversion
One value per line, up to 200. Uses the selected gal → L units. Invalid rows stay visible in the results and CSV.
Compare all units
Using this volume converter
Compare tank capacities, liquid quantities and geometric volumes in litres, cubic metres or US gallons.
A cubic metre contains 1,000 litres. Converting volume does not calculate a tank's working capacity, freeboard or the mass of its contents.
Check before using the result
- Gallon here means US liquid gallon. An Imperial gallon is different and cannot use the same factor.
- Oil barrel means 42 US gallons. A physical drum or container called a barrel may have a different rated capacity.
Definitions and method: NIST: unit conversion factors and rounding. Calculations use double-precision arithmetic; the display precision can be adjusted above.
Gallons to Litres conversion chart
| Gallon (US) (gal) | Litre (L) |
|---|---|
| 1 | 3.78541178 |
| 2 | 7.57082357 |
| 3 | 11.35623535 |
| 5 | 18.92705892 |
| 10 | 37.85411784 |
| 15 | 56.78117676 |
| 20 | 75.70823568 |
| 25 | 94.6352946 |
| 30 | 113.5623535 |
| 50 | 189.2705892 |
| 100 | 378.5411784 |
| 250 | 946.352946 |
More conversions
Related Guides & Articles
PDF to JPG: Complete Guide to Converting PDF Pages into Images
Learn how to convert PDF pages to JPG images, understand image quality and resolution, reduce file size, and choose the right format for documents, websites and online uploads.
Read Article →PDF to PNG: Complete Guide to Converting PDF Pages into High-Quality PNG Images
Learn how PDF to PNG conversion works, when PNG is better than JPG, how resolution affects image quality, and how to convert PDF pages into high-quality PNG images.
Read Article →Client-Side File Conversion with WebAssembly
How modern browsers can convert images, PDFs, audio and video without ever uploading your files to a server.
Read Article →