Time in Range (TIR) Calculator
Enter the hours you spent in each glucose band over a typical day. See your Time in Range, time below range, and time above range against the international consensus CGM targets.
What the targets mean
The 2019 international consensus recommends, for many non-pregnant adults with diabetes: >70% Time in Range (70–180 mg/dL), <4% below 70 mg/dL and <1% below 54 mg/dL, and <25% above 180 mg/dL with <5% above 250 mg/dL. Each additional 5% of Time in Range is generally considered clinically meaningful. Time in Range describes the shape of control across the day, which a single HbA1c can hide — see Why Time in Range isn't enough and HbA1c vs CGM.
See your full glucose curve
Time in Range is one summary. The continuous trace shows exactly when and why glucose leaves range.
Check your glucoseSources
Battelino T, et al. Clinical targets for continuous glucose monitoring data interpretation: recommendations from the international consensus on Time in Range, Diabetes Care, 2019.
American Diabetes Association — CGM & Time in Range.
Related: HbA1c & GMI calculator · Glossary · All resources