Fructosamine to hgb a1c conversion. hba1c , and fructosamine, do you know of a conversion factor for fructosamine to convert from mmol/l to umol/l,. fructosamine to a1c conversion calculator. hba1c test is a glycated hemoglobin test that reflects last 3 months average blood-glucose level…. to convert the a1c to average blood glucose, consider.. comparison of blood glucose, hba1c, and.