Corrected QT Interval Bazett’s formula online calculator

  • Bazett’s formula The formula should be used in patients with a heart rate of 60 to 100 beats per minute. In cases of tachycardia or bradycardia, the values may not be correct.
  • For heart rate below 60 or above 100 beats per minute, the adjusted QT interval should be calculated by the Framingham formula.

Normal values of Corrected QT: 320-430 for men and 320-450 for women.

  • Bazett’s formula The formula should be used in patients with a heart rate of 60 to 100 beats per minute. In cases of tachycardia or bradycardia, the values may not be correct.
  • For heart rate below 60 or above 100 beats per minute, the adjusted QT interval should be calculated by the Framingham formula.

Normal values of Corrected QT: 320-430 for men and 320-450 for women.

Corrected Interval Q-T

  beats / min
Corrected Interval QT  

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