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