💧 Volume
Us Gallons to Liters Converter
Convert US gallons to liters instantly. Enter any value and get the result. Includes a conversion table and the exact formula.
Quick answer: To convert US gallons to liters, multiply by 3.78541. For example, 1 US gallons = 3.78541 liters. Use the calculator below for any value.
US gallons to liters
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Common conversions
| Us Gallons | Liters |
|---|
Formula:
How to convert US gallons to liters
1
Enter your value
Type the number of us gallons you want to convert into the left box. The result in liters appears instantly in the right box. You can also type into the right box to convert in the other direction.
2
Use the swap button
Click the ⇄ Swap button to reverse the conversion — Liters to Us Gallons. Your current value carries across so you don't have to re-enter anything.
3
About Us Gallons and Liters
The US gallon is 3.785 litres. The UK (imperial) gallon is 4.546 litres. Always clarify which gallon is meant.
💡 Did you know?
1 US gallon = 3.785 L; 1 UK gallon = 4.546 L. Always check whether a 'gallon' means US or UK before converting — a 20% difference is not a rounding error.
📊 Common conversions at a glance
| Us Gallons | Liters |
|---|---|
| 0.5 | 1.893 |
| 1 | 3.785 |
| 2 | 7.571 |
| 5 | 18.93 |
| 10 | 37.85 |
| 15 | 56.78 |
Reviewed for 2026. Us Gallons ↔ Liters conversion factor verified against published reference data. Built by a UK-based qualified primary teacher and FA Level 2 coach as part of 247QuickTools' free utility-tools project.