- Use the A1C calculator to work out your A1C (% or mmol/mol) from your average blood glucose (mg/dL or mmol/l) and vice versa. - Set a date for your calculation(s) and store your results. - Logbook - view a history of the results you have stored to date. - Charts - take an at a glance look at how your hbA1C readings have changed throughout the year. We have designed the A1C calculator app around Accessibility, taking care to ensure ease of use for people from any background. Every element of