Cardiology · Emergency Medicine
Corrected QT Interval (Fridericia) 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
Fridericia LS. Die Systolendauer im Elektrokardiogramm bei normalen Menschen und bei Herzkranken. Acta Med Scand. DOI: 10.1111/j.0954-6820.1920.tb00164.x. PMID: 18659245. Scope: Fridericia correction QTc = QT / RR^(1/3) with RR in seconds. (1920)
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