How many milliliters are in one liter?

One liter is equal to 1,000 milliliters. This relationship is foundational in the metric system, where the liter is a unit of volume and the milliliter is a smaller unit within that system. The conversion is straightforward: 1 liter is divided into 1,000 equal parts, each part being a milliliter. This consistency makes it easy to convert between the two units in various practical applications, especially in fields such as medicine, cooking, and science, where precise measurements are critical. Understanding this conversion is essential for accurately measuring liquids and solving related problems.