QTcF Calculator

QTcF Calculator calculator can be used to correct the QT interval for heart rate variations in an electrocardiogram (ECG).

Input Parameters

Calculation Results

QTcF Result (seconds):

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Where:
QTcF = QT / √RR
QT is the QT interval in seconds.
RR is the RR interval in seconds.

QTcF Calculator Calculator Usage Guide

Learn how to use the QTcF Calculator calculator and its working principles

How to Use the QTcF Calculator

  1. Enter the QT interval in seconds.
  2. Enter the RR interval in seconds.
  3. Click the "Calculate" button to obtain the corrected QT interval (QTcF).
  4. The result will be displayed in seconds.

Understanding the QTcF

The QT interval on an ECG represents the time from the start of ventricular depolarization to the end of ventricular repolarization. It is important to correct the QT interval for variations in heart rate because a longer QT interval can increase the risk of arrhythmias.

The Bazett formula (QTcF = QT / √RR) is commonly used for this correction. It is important to ensure that the RR interval is accurately measured to obtain a reliable QTcF value.