Quick guide
How to use this calculator
- Use the labels and unit notes to enter the requested measurement, date, time, or observation exactly as recorded.
- Check the visible method, population, and unit basis before using the result; switch modes rather than converting values mentally.
- Read the calculation audit and limitations together. The result supports measurement or tracking and does not replace diagnosis, treatment, or urgent medical assessment.
Calculation method
How the cgm time-in-range summary calculator works
Category percentage = entered category minutes ÷ total entered active minutes × 100.
This summarizes an existing report using adult nonpregnancy bins; it does not choose individualized goals or infer treatment changes.
Worked example
CGM Time-in-Range Summary example
Across 1,440 active minutes, 1,008 minutes at 70–180 mg/dL equals 70.0% time in that entered bin.
Category percentage = entered category minutes ÷ total entered active minutes × 100.
Supported inputs
Precision and limits
Supported purpose
Enter already categorized minutes, not raw readings. The five categories together are bounded to 44,640 minutes (31 days). Pregnancy and pediatric reports require different population-specific review and are excluded.
Measurement quality
The output is only as reliable as the entered measurement, device, timing, units, and applicable reference population. Recheck unexpected values against the original record.
Clinical boundary
This calculator does not diagnose a condition, choose treatment, change medication, or determine that an urgent symptom is safe to monitor at home. Contact an appropriate health professional or local emergency service when the situation may be urgent.
Privacy
Entered health values and results stay in this browser tab. They are not placed in URLs, analytics, logs, local storage, session replay, or a cloud record by this calculator.
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