How many milliliters are in one liter?

One liter is equivalent to 1000 milliliters. This is a standard conversion in the metric system, where the liter and milliliter are both units of volume. The metric system is decimal-based, which means that each unit is either a tenth, a hundredth, or a thousandth of another unit. Specifically, 1 liter is defined as exactly 1000 milliliters, making it a straightforward conversion. Understanding this relationship is essential when working with volumes in various scientific, culinary, and mathematical contexts. Additionally, because the metric system is widely used, knowing this conversion allows for easy communication and computation in many different fields.