Converting gallons to liters is a common need, especially when working between the U.S. customary system and the metric system. One U.S. gallon is approximately 3.785 liters. To find how many liters are in 4 gallons, simply multiply 4 by 3.785. The result is 15.14 liters.
This conversion is helpful when measuring liquids like water, gasoline, or beverages. For example, if you’re traveling internationally and need to refill your car’s fuel tank, knowing this conversion makes planning easier. Keep in mind that the UK gallon differs slightly (4.546 liters), so it’s important to confirm which gallon system is in use. Understanding these conversions can simplify everyday tasks involving measurements across systems.