Free Blood Sugar & Glycemic Calculators

What these tools help with

Planning meals around steadier blood sugar. The glycemic load calculator combines a food's glycemic index with the serving you actually eat, so two foods can be compared on the plate instead of in the abstract. When you only need the raw GI number for a food, the glycemic index lookup covers close to five thousand foods in one search. And if you would rather scan than search, the glycemic load chart lays out 27 everyday foods at three serving sizes on a single page.

Making sense of CGM data. If you wear a continuous glucose monitor, the GMI calculator converts your sensor's average glucose into a Glucose Management Indicator — the CGM-era counterpart to a lab A1C — so you can sanity-check trends between lab draws instead of waiting months for the next blood test.

Translating lab reports and meter units. The A1C to eAG calculator turns the percentage on a lab report into the everyday glucose units a meter shows, the glucose to A1C estimator runs the same relationship in reverse as a range, and the blood sugar converter moves any reading between mg/dL and mmol/L — handy when your clinic and your device disagree on units.