Free glucose tools

Quick answers from your own numbers. Type a few readings, paste a list, or drop your sensor’s export. Everything runs in your browser and nothing is uploaded.

• The free CGM reportDrop a whole export and get the full report: AGP, time in range, GMI, CV, your biggest rises.
• GMI calculatorThe A1C that usually goes with your CGM average.
• Time in range calculatorHow much of the day your readings spent in range, on two bands.
• Glucose variability (CV) calculatorHow much your readings swing around your average.
• Meal spike checkerHow far a meal moved your glucose, and when you were back.
• mg/dL ↔ mmol/L converterBlood glucose in both units, both ways.
• Compare two CGM exportsTwo sensors worn at once, or this month against last: side by side, and how far apart two sensors read.
• HbA1c ↔ average glucoseTurn a lab HbA1c into the average glucose it usually goes with, and back.

Runs in your browser. Nothing you type or drop here is uploaded.

Information, not a diagnosis. HealthOS is a wellness product, not a medical device: these numbers can’t tell you whether anything needs treatment. Talk to a doctor about your results.