How many milliliters are in a 1.5 liter bottle of water?

There are 1,500 milliliters in a 1.5 liter bottle of water. This conversion is based on the fact that 1 liter is equal to 1,000 milliliters. Therefore, to convert 1.5 liters to milliliters, you would multiply 1.5 by 1,000, resulting in 1,500 milliliters.