QTc Calculator

The QTc Calculator helps in calculating the corrected QT interval based on the QT interval and heart rate using Bazett’s formula. This calculator is useful for assessing the QTc duration, which is an important indicator of heart health and potential arrhythmias. Enter your values to get the result.

QT Interval (ms):

Heart Rate (bpm):

QTc Calculation Result

Parameter	Value
RR Interval
QTc (Bazett)

QTc Calculation Formula:

QTc = QT / √RR

Where:

QTc = Corrected QT interval
QT = Duration of QT interval
RR = Duration of RR interval (calculated from heart rate)

Note:

Though Bazett’s formula is popular, it has limitations, especially at high and low heart rates. Other formulas like Fridericia and Hodges may provide more accurate results for extreme heart rates.