Earlier today, looking for information to answer an interesting question from @wiseowl_123 , I found a post on the forum describing how HbA1c is calaculated from BG readings . This includes a converter which I have used to calculate my own readings as follows .. I have been testing my Fasting, pre-Prandial and post-Prandial levels every day since 22nd Feb. I have now averaged all these readings, applied the converter and come up with .. Fasting : 5.63 average reading .. converts to HbA1c of 32.8 Pre- Pr : 5.59 average reading .. converts to HbA1c of 32.5 Post-Pr : 5.75 average reading .. converts to HbA1c of 33.6 I am, of course, delighted with this but I am a little unsure about the accuracy of these calculations and the overall reliability of the converter. I would really appreciate comments, advice etc from anybody who has used this ..