A milliliter (mL) is a unit of volume equal to one thousandth of a liter, or 1 cubic centimeter (cm³). Specifically:

• 1 milliliter = 0.001 liters
• 1 liter = 1000 milliliters

So, to summarize:

• 1 mL is 1/1000 of a liter
• 1 liter contains 1000 mL

This means if you have a volume in liters and want to convert it to milliliters, you multiply by 1000. Conversely, to convert milliliters to liters, you multiply by 0.001 or divide by 1000