How many milliliters are in one liter (L)?

One liter (L) is equivalent to 1000 milliliters (mL). This is a standard measurement in the metric system, where the relationship between liters and milliliters is defined to help with conversions in various fields, including medicine and science. The liter is a larger unit of volume, while the milliliter is a smaller unit, with 1000 milliliters making up one liter. This fundamental understanding is crucial in medication administration, as accurate dosing often requires precise measurement in milliliters. Knowing that one liter consists of 1000 milliliters allows healthcare professionals to convert between these units quickly and accurately, ensuring safe and effective patient care.