Milligrams per microliter to grams per milliliter conversion calculator above calculates how many grams per milliliter are in 'X' milligrams per microliter (where 'X' is the number of milligrams per microliter to convert to grams per milliliter). In order to convert a value from milligrams per microliter to grams per milliliter (from mg/μL to g/mL) type the number of mg/μL to be converted to g/mL and then click on the 'convert' button.