How to use the corrected qt interval calculator
Correct the QT interval on an ECG for heart rate using Bazett formula. Enter qt interval, heart rate in the fields above; the corrected qt (bazett) is computed instantly and plotted on the chart so you can see how the answer changes.
Common searches this calculator answers include “QTc Bazett”, “corrected QT”, “QT interval heart rate correction”, “calculate corrected qt interval”, “find corrected qt”.
Formula
Variables
- qt — QT interval (ms)
- hr — Heart rate (bpm)
Worked example
With qt interval = 400 ms, heart rate = 75 bpm, the calculator gives corrected qt (bazett) ≈ 447.2136 ms.
Frequently asked questions
What is the corrected qt interval calculator used for?
Correct the QT interval on an ECG for heart rate using Bazett formula. It helps with questions such as “QTc Bazett”, “corrected QT”, “QT interval heart rate correction”.
What is the formula for the corrected qt interval calculation?
Corrected QT (Bazett) (ms) = qt / √(60 / hr). Here qt is qt interval (ms), hr is heart rate (bpm).
What inputs do I need for the corrected qt interval (bazett) calculator?
You need qt interval in ms, heart rate in bpm. Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use the corrected qt interval calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the corrected qt interval result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.