Cardiology · Emergency Medicine
Corrected QT Interval (Rautaharju) calculator
Enter the published formula inputs below to calculate and interpret this score.
Clinical inputs
ms
Allowed range: 200–700 ms
Quick picks
/min
Allowed range: 30–220 /min
Quick picks
Result
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Clinical inputs
- QT interval (ms)Accepted range: 200 to 700
- Heart rate (/min)Accepted range: 30 to 220
Primary source
Rautaharju PM et al. New age- and sex-specific criteria for QT prolongation based on rate correction formulas that minimize bias at the upper normal limits. Int J Cardiol. 2014;174:535-540. DOI: 10.1016/j.ijcard.2014.04.133. PMID: 24825030. Scope: QTcMod (ms) = QT × (120 + heart rate [beats/min]) / 180. (1998)
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