How many liters are in one US gallon?
One US gallon is exactly 3.785411784 liters.
Convert gallon (US) (gal (US)) to liter (L, l) instantly.
Formula
value × 3.785411784
| Sample | Converted |
|---|---|
| 1 gal (US) | 3.785412 L, l |
| 5 gal (US) | 18.927059 L, l |
| 10 gal (US) | 37.854118 L, l |
| 100 gal (US) | 378.541178 L, l |
| 1,000 gal (US) | 3,785.411784 L, l |
Use this page when a volume in US gallons needs to be converted into liters. This is a common US-to-metric liquid conversion for fuel, water, tanks, pools, aquariums, beverages, appliances, chemicals, and household capacity.
US gallons are common in the United States. Liters are standard in most metric liquid-capacity contexts.
This conversion is useful whenever a US liquid amount needs to be understood internationally.
The liter result will be larger than the US gallon value because one gallon contains several liters.
For fuel and water, the US-versus-imperial gallon distinction is important.
For consumer labels, liters are often easier than cubic meters.
This page converts volume only; fuel economy and flow rate use separate conversions.
Gallons are common on US fuel, water, appliance, and tank labels.
Liters are common in metric countries and on many international product labels.
Converting US gallons to liters makes the volume easier to compare across regions and equipment standards.
This page uses US liquid gallons.
Imperial gallons are larger, so they do not convert to the same liter value.
When a source only says gallons, check the region or standard before using the result.
1 US gal should equal exactly 3.785411784 l.
10 US gal should equal exactly 37.85411784 l.
If 1 gal is shown as about 4.546 l, that is an imperial gallon conversion.
Definition: A US liquid gallon is a US customary volume unit equal to 231 cubic inches.
History/Origin: US gallons are used for liquid capacity in fuel, water, appliances, containers, and consumer products in the United States.
Current use: gal_us is used for fuel, water tanks, pools, aquariums, irrigation, beverages, appliances, and liquid storage.
Definition: A liter is a metric volume unit equal to 1,000 milliliters.
History/Origin: Liters are used globally for liquid capacity, fuel, beverages, containers, and scientific measurement.
Current use: l is used for water, fuel, beverages, tanks, appliances, aquariums, lab volumes, and liquid containers.
| gallon (US) [gal (US)] | liter [L, l] |
|---|---|
| 0.01 gal (US) | 0.037854 L, l |
| 0.1 gal (US) | 0.378541 L, l |
| 1 gal (US) | 3.785412 L, l |
| 2 gal (US) | 7.570824 L, l |
| 5 gal (US) | 18.927059 L, l |
| 10 gal (US) | 37.854118 L, l |
| 20 gal (US) | 75.708236 L, l |
| 50 gal (US) | 189.270589 L, l |
| 100 gal (US) | 378.541178 L, l |
1 gal (US) = 3.785412 L, l
1 L, l = 0.264172 gal (US)
Formula: value × 3.785411784
Example: 15 gal (US) = 56.781177 L, l
Precision note: Use the exact US liquid gallon definition. Keep more precision for fuel, billing, chemical, or equipment-capacity work.
One US gallon is exactly 3.785411784 liters.
No. A US gallon is smaller than an imperial gallon. This page uses US gallons.
5 US gallons is exactly 18.92705892 liters.