Convert gallons to liters (gal to L) or liters to gallons (L to gal) instantly with our free online converter. This tool supports both US gallons (3.785 L) and UK/Imperial gallons (4.546 L) — perfect for fuel, cooking, and travel conversions.
Fast, accurate, and mobile-friendly — use it daily for any measurement conversion.
Gallon ⇄ Liter Converter (US & UK)
How to Use the Gallon ⇄ Liter Converter
- Choose the conversion direction — Gallons → Liters or Liters → Gallons.
- Select your system — US or UK (Imperial) gallon.
- Enter your value (or paste a list of multiple numbers).
- Adjust the decimal precision (0–6 places).
- Click Swap Direction or Copy Results for convenience.
Conversion Formulas:
- 1 US gallon = 3.785411784 liters
- 1 UK gallon = 4.54609 liters
- 1 liter = 0.264172 US gallons
- 1 liter = 0.219969 UK gallons
Why Use This Gallon to Liter Converter
✔ Converts between US and UK gallons
✔ Instant and precise results
✔ Works with single or bulk conversions
✔ Customizable decimal rounding
✔ 100% responsive — works on mobile, tablet, or desktop
Conversion Examples
| Gallons (US) | Liters (L) |
|---|---|
| 1 gal | 3.785 L |
| 2 gal | 7.571 L |
| 5 gal | 18.927 L |
| 10 gal | 37.854 L |
| Liters (L) | Gallons (US) |
|---|---|
| 1 L | 0.264 gal |
| 5 L | 1.32 gal |
| 10 L | 2.64 gal |
| 20 L | 5.28 gal |
| Gallons (UK) | Liters (L) |
|---|---|
| 1 gal | 4.546 L |
| 2 gal | 9.092 L |
| 5 gal | 22.73 L |
| 10 gal | 45.46 L |
FAQ
Q: What’s the difference between US and UK gallons?
A: US gallons are smaller (3.785 L) compared to UK/Imperial gallons (4.546 L).
Q: Can I convert multiple numbers at once?
A: Yes — just paste multiple values separated by commas or spaces.
Q: Is this tool free to use?
A: Absolutely — it’s 100% free, simple, and fast.
Q: Can I use it on my phone?
A: Yes, the converter is fully mobile-friendly and easy to use anywhere.