What is the total number of milliliters in 1 gallon?

The total number of milliliters in 1 gallon is 3,785 mL. This conversion stems from the fact that there are approximately 3.785 liters in a gallon and knowing that 1 liter is equivalent to 1,000 milliliters allows for easy calculation. Therefore, when converting gallons to milliliters, one can multiply the number of liters in a gallon by 1,000 to get the total milliliters. This well-established relationship makes the conversion straightforward and reliable.