How many mL are in one L?

Answer 1

Milli is a prefix in the SI and other systems of units denoting a factor of 10-3, 0.001 or 1/1,000. Adopted in 1795, the prefix comes from the Latin mille, meaning one thousand.

So, 1 milliliter is 0.001 liter and there are 1000 ml in 1 liter.

1 Liter (L) equals 1000 milliliters (mL).

We use this for all fluids, not only water.
1 liter = 1000 ml

1 ml = 0.001 L