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Calculates heart rate from the number of beats counted over a measured time interval.
beats / time
60-100 bpm
Interpret results together with the patient's clinical presentation.
Specialty
Emergency MedicineCategory
CardiologyDifficulty
Basic
Estimated Time
30 seconds
Version
1.0
Last Updated
2026-08-06
Formula
Keywords
Normal Range
60-100 bpm
Calculates heart rate from the number of beats counted over a measured time interval.
A normal resting heart rate for adults is 60–100 bpm. Values below 60 bpm may indicate bradycardia, and values above 100 bpm may indicate tachycardia, though athletes and certain medications affect these thresholds.
Heart rate is a fundamental vital sign used to assess hemodynamic status, guide further evaluation of bradycardia or tachycardia, and monitor response to treatment.
A nurse counts 72 beats over 1 minute in an adult patient.
Inputs:
Heart rate = 72 / 1 = 72 bpm, within the normal adult range of 60–100 bpm.
The normal resting heart rate for adults is 60–100 bpm. Well-trained athletes may have rates below 60 bpm without pathology.
For irregular rhythms such as atrial fibrillation, count over 30–60 seconds to obtain a more accurate average heart rate.
Disclaimer: This calculator is intended for educational and clinical decision support purposes only. Heart rate interpretation requires clinical context and is not a substitute for ECG when arrhythmia is suspected.