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