ECG Heart Rate Calculator

Calculate heart rate from ECG readings. Determine heart rate using R-R interval or number of QRS complexes. This is an educational tool only - always consult a healthcare provider.

ECG Measurement

Results

Enter ECG measurement to calculate heart rate

About ECG Heart Rate

  • • HR = 300 ÷ R-R interval (small boxes)
  • • HR = (QRS count × 60) ÷ time interval
  • • Normal: 60-100 bpm
  • • 1 small box = 0.04 seconds