Time in Range and Continuous Glucose Monitoring
CGM metrics that go beyond A1C.
Time in range
Time in range is the share of readings between 70 and 180 mg/dL. International consensus targets more than 70 percent for most adults with diabetes.
Other metrics
Time below range should be under 4 percent. The glucose management indicator turns mean glucose into an A1C-like value.
Using CGM
Review patterns with your care team, looking at meals, exercise and overnight trends rather than single readings.
Try it: Time in Range & GMI Calculator
Example with sample values. Open the full calculator →
Time in range73 %
Below range2 %
Above range25 %
GMI6.9 %
International consensus targets are above 70% time in range and under 4% below range.
Educational content only. This article does not replace advice from a qualified health professional. Medical disclaimer.