US Gallons to Liters
Convert us gallons to liters instantly. Change the amount or check the formula below.
More actions
Multiply US gal by 3.785411784 to get L.
Same value in other units View equivalents
| Unit | Equivalent value |
|---|---|
| Milliliters (mL) | 18,927.05892 mL |
| Liters (L) | 18.927059 L |
| US fluid ounces (US fl oz) | 640 US fl oz |
| UK (imperial) fluid ounces (UK fl oz) | 666.139348 UK fl oz |
| Imperial gallons (imp gal) | 4.163371 imp gal |
How to convert US gal to L
Multiply US gal by 3.785411784 to get L.
Enter your value in the converter. The displayed result updates immediately. All math is performed in your browser. You can use the copy function to save a result or share a linked example with a colleague.
Quick reference table
Choose a value below to try it in the live converter.
| US gallons | Liters |
|---|---|
| 3.7854118 L | |
| 7.5708236 L | |
| 18.9270589 L | |
| 37.8541178 L | |
| 94.6352946 L | |
| 189.2705892 L | |
| 378.5411784 L |
Results use the volume dimension. Choose compatible units only; the precision selector changes display rounding, not the underlying factor.
Verify US gal to L
Using the stated definitions, 1 US gal = 3.785411784 L and 10 US gal = 37.85411784 L. The live converter accepts your own value; the table provides additional check points.
Conversion method
Multiply US gal by 3.785411784 to get L.
US customary versus imperial volume
A US fluid ounce measures volume, not the mass ounce. A US gallon is 3.785411784 liters; an imperial gallon is 4.54609 liters. Recipes and container labels must identify which convention is intended.
A US cup is 1/16 of a US liquid gallon, while a US tablespoon is one-half US fluid ounce. Volume cannot be converted to mass without a material density.
Need the other direction? Convert L to US gal.
Reference: NIST conversion factors. Calculation and display rounding are separate. See how we calculate.
Methodology: fixed SI definitions and standards-based factors. For safety-critical use, verify the required industry specification. Check definitions, conventions and sources.