Medical Calculator – SonDoctor.com
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ECG Heart Rate Calculator (Calculate BPM from RR Interval)
Enter the number of small boxes (mm) between R waves.
Heart Rate [bpm] = (Paper Speed [mm/sec] × 60) / RR Interval [mm]
How to Use the ECG Heart Rate Calculator
- Count the number of small boxes between two R waves on the ECG.
- Check the paper speed on the ECG tracing.
- Enter the values into the calculator and compute the heart rate.
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