How many milliliters are in one liter?

One liter is equivalent to 1,000 milliliters because the metric system is based on powers of ten, and the prefix "milli-" denotes one-thousandth of a unit. Therefore, when converting liters to milliliters, you multiply by 1,000, which leads to the understanding that there are 1,000 milliliters in one liter. This relationship is fundamental in both everyday measurements and scientific applications, making it essential knowledge for nursing and healthcare-related fields.