There are 1,000 milliliters (mL) in 1 liter (L). This is because the prefix "milli-" means one-thousandth, so a milliliter is one-thousandth of a liter.

Quick conversion:

• 1 liter = 1,000 milliliters
• 0.5 liter = 500 milliliters
• 2 liters = 2,000 milliliters

If you need help with any other unit conversions, feel free to ask!