A1c & Blood Sugar Converter

A1c and average blood sugar, made simple

A1c reflects your average blood sugar over the past two to three months. This converter uses the standard ADAG equation to translate an A1c percentage into estimated average glucose (eAG) — in both mg/dL and mmol/L — and back the other way. It's a handy way to make sense of a result, but it's an estimate: your own lab's numbers are what matter.

Understand your numbers

If you're tracking blood sugar, the next step is the everyday habits that steady it. Our Nutrition guides cover low-glycemic, gut-friendly eating in plain English.