Direct answer
How Many mL in a Liter? 1 L = 1000 mL
1 liter equals exactly 1000 milliliters. Exact metric answer for bottles, medicine doses, and recipes.
Question
How many milliliters are in a liter?
1 liter (L) equals exactly 1000 milliliters (mL).
1 L
1000 mL (exact)
0.5 L
500 mL
Formula
mL = L × 1000
Explanation
The milli- prefix means one-thousandth, so move the decimal three places: L × 1000 = mL.
Example: 2.5 L = 2500 mL; 500 mL = 0.5 L.
1 mL is also 1 cubic centimeter (cm³) for water-density approximations.