How many milliliters are in 1 liter?

One liter is defined as being equivalent to 1000 milliliters. This is a standard conversion in the metric system, where the prefix 'milli-' denotes a factor of one-thousandth. Since a liter is a unit of volume commonly used in medical dosing and various scientific applications, understanding this conversion is crucial for accurately measuring liquids in healthcare settings. Thus, knowing that 1 liter equals 1000 milliliters allows for precise calculations essential for medication administration and other medical processes.