Calculator · glucose metrics

Time in Range (TIR) Calculator

Free tool · Updated July 2026

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.

Total entered: 24.0 h
Time in range
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Below range (<70)
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Above range (>180)
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Illustrative and educational only. These consensus targets apply to many non-pregnant adults with type 1 or type 2 diabetes. Targets are different for pregnancy, older or high-risk adults, and other situations, and should be individualized with your clinician. This tool is not a diagnosis and is not a reason to change treatment on your own.

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 glucose

Sources

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