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 data coverage calculator works
Coverage = active CGM minutes ÷ (report days × 1,440 minutes) × 100.
Coverage quantifies how much of the entered calendar period has data; it does not establish clinical representativeness.
Worked example
CGM Data Coverage example
18,144 active minutes across 14 days gives 90.0% coverage and 33.6 unrepresented hours.
Coverage = active CGM minutes ÷ (report days × 1,440 minutes) × 100.
Supported inputs
Precision and limits
Supported purpose
A device report may define active time differently. The result does not assess sensor quality, accuracy, gaps or suitability for treatment decisions.
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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