How many liters are in 1 gallon (U.S.)?

One gallon (U.S.) is equivalent to 3.785 liters. This conversion is based on the established measurement standards that define the relationship between these two units of volume. The U.S. gallon is specifically defined as 231 cubic inches, which, when converted to liters, results in approximately 3.785 liters.

Understanding this conversion is crucial in various fields, including cooking, science, and engineering, where measurements often need to switch between metric and imperial systems. The accuracy of these conversions is essential for effective communication and quality control in trade and industry contexts.

In contrast, the other values mentioned do not represent the correct conversion for a U.S. gallon to liters. For example, 4.546 liters corresponds to the imperial gallon used in the UK, which is larger than the U.S. gallon. Similarly, 1.0 liters and 0.568 liters are unrelated to the U.S. gallon conversion, with the latter representing a pint in the imperial measurement. This highlights the importance of knowing which gallon is being referenced in measurement discussions.