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