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