Milligrams per liter to micrograms per milliliter converter above calculates how many micrograms per milliliter are in 'X' milligrams per liter (where 'X' is the number of milligrams per liter to convert to micrograms per milliliter). In order to convert a value from milligrams per liter to micrograms per milliliter (from mg/L to μg/mL) type the number of mg/L to be converted to μg/mL and then click on the 'convert' button.