What is the QTc Calculator | Corrected QT Interval?

The QTc Calculator | Corrected QT Interval is a free online tool that helps you perform health calculations quickly and accurately. Simply enter your values and get instant results.

How do I use the QTc Calculator | Corrected QT Interval?

Enter the required values in the input fields, select your preferred units if applicable, and the calculator will automatically compute the results. The interface is designed to be intuitive and easy to use.

Is the QTc Calculator | Corrected QT Interval free to use?

Yes, the QTc Calculator | Corrected QT Interval is completely free to use. There are no hidden fees, subscriptions, or limitations on the number of calculations you can perform.

Can I use the QTc Calculator | Corrected QT Interval on mobile devices?

Yes, the QTc Calculator | Corrected QT Interval is fully responsive and works seamlessly on all devices including smartphones, tablets, and desktop computers.

How accurate is the QTc Calculator | Corrected QT Interval?

The QTc Calculator | Corrected QT Interval uses precise mathematical formulas and algorithms to ensure accurate results. However, always verify critical calculations with professional standards or consultants when needed.

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QTc Calculator

Calculate corrected QT interval using multiple formulas

ECG Measurements

QT Interval (ms)

Heart Rate (bpm)

Sex

Formulas:

Bazett: QTc = QT / √RR

Fridericia: QTc = QT / ∛RR

Framingham: QTc = QT + 154(1-RR)

QTc Normal Ranges

<350 msShort QTc

350-450 ms (M) / 460 ms (F)Normal

450-480 msBorderline

480-500 msProlonged

>500 msSeverely Prolonged

Understanding QTc

The QT interval represents ventricular depolarization and repolarization. Since it varies with heart rate, correction formulas are used to calculate QTc. Prolonged QTc increases risk of Torsades de Pointes, a dangerous arrhythmia.

Heart Rate Zones CV Risk Blood Pressure HRV

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