Quickly determine your Corrected QT (QTc) interval using our online QTc calculator. Input your measured QT interval and heart rate (HR) to apply Bazett's formula, crucial for assessing cardiac health and risk of arrhythmias, including Long QT Syndrome. Understand your ECG results better.
Formula:
The QTc interval is calculated using Bazett's formula:
QTc = QT / √(RR)
Where:
- QT is the measured QT interval in milliseconds (ms).
- RR is the R-R interval in seconds (s), which is derived from the heart rate (HR) as
RR = 60 / HR.
This formula corrects the QT interval for variations in heart rate, providing a more standardized value.