Free Online EKG Heart Rate & QTc Calculator
Quickly calculate BPM and Bazett's corrected QT (QTc).
EKG Interval Calculator
Enter your measured intervals in milliseconds to calculate the heart rate and corrected QT interval.
Heart Rate
75 BPM
QTc (Bazett)
447 ms
Measure directly on your EKG scans
Stop manual typing. Cardio Calipers for Windows allow you to measure PR, QRS, and QT directly on your screen. It calibrates to the grid and does the math for you.
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Professional on-screen EKG calipers for medical professionals.