How to use Gallons to Liters
- Type a value in US gallons.
- The result in liters appears instantly.
- Type in the second box to convert the other way.
How to convert US gallons to liters
Multiply the value in US gallons by 3.7854. Formula: L = gal × 3.7854. Example: 10 gal × 3.7854 = 37.8541 L.
Common US gallons to liters conversions
5 gal = 18.9271 L. 25 gal = 94.6353 L. 50 gal = 189.2706 L. 100 gal = 378.5412 L.
Quick mental math
Quick estimate: multiply by 4 and subtract 5%. 10 gal → 40 − 2 = 38 L (exact: 37.9 L).
Where is gal to L conversion used?
Volume conversions are needed for cooking and baking with American recipes, measuring medicine doses, comparing drink and bottle sizes, and calculating fuel in liters or gallons.
What are US gallons?
A US gallon is exactly 3.785411784 liters. It is used for fuel and milk in the United States. (A UK imperial gallon is larger: 4.546 liters.)
What are liters?
A liter is the everyday metric unit of volume, used for drinks, fuel and containers.
US gallons to liters conversion table
| US gallons (gal) | Liters (L) |
|---|---|
| 1 | 3.7854 |
| 2 | 7.5708 |
| 3 | 11.3562 |
| 4 | 15.1416 |
| 5 | 18.9271 |
| 6 | 22.7125 |
| 8 | 30.2833 |
| 10 | 37.8541 |
| 12 | 45.4249 |
| 16 | 60.5666 |
| 20 | 75.7082 |
| 25 | 94.6353 |
| 32 | 121.1332 |
| 50 | 189.2706 |
| 100 | 378.5412 |
| 250 | 946.3529 |
| 500 | 1,892.71 |
| 1,000 | 3,785.41 |
Frequently asked questions
How many liters are in 1 US gallon?
1 US gallon = 3.7854 liters (1 gal = 3.7854 L).
How many US gallons are in 1 liter?
1 liter = 0.264172 US gallons (1 L = 0.264172 gal).
What is 10 gal in liters?
10 gal = 37.8541 L.
What is 100 gal in liters?
100 gal = 378.5412 L.
Is the gal to L conversion exact?
Yes for US units: the US gallon is defined as exactly 3.785411784 liters, and cups, fluid ounces and spoons are exact fractions of it. UK (imperial) gallons and fluid ounces are different sizes.
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