EKG Interval Calculator
Analyze ECG/EKG intervals with corrected QT calculation (Bazett, Fridericia, Hodges) and interpretation of PR, QRS, and QT intervals.
Medical Disclaimer
This calculator is for informational and educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making decisions about your health. Never disregard professional medical advice or delay seeking it because of results from this tool.
Inputs
Results
QTc (Bazett)
447 ms
How to Use This Calculator
- Enter heart rate (bpm), PR interval (ms), QRS duration (ms), and QT interval (ms).
- Review QTc by Bazett, Fridericia, and Hodges formulas, RR interval, and status flags.
- QTc > 500 ms by any formula is critically prolonged and requires urgent clinical review.
- PR > 200 ms = first-degree AV block; QRS > 120 ms = bundle branch block or aberrant conduction.
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