RR Interval to Heart Rate Calculator
Convert the time between heartbeats on an ECG into beats per minute.
Your result
Heart rate is 60,000 divided by the RR interval in milliseconds. Use an average over several beats for a steadier value.
Medical disclaimer: This tool is for education and is not medical advice. Read more.
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Frequently asked questions
What does the RR Interval to Heart Rate Calculator do?
Convert the time between heartbeats on an ECG into beats per minute. Enter your values and the result and chart update instantly.
How accurate is it?
It uses published, widely used formulas. Results are estimates for education and planning, not a diagnosis. Talk to a qualified clinician about decisions affecting your health.
Is my information stored or shared?
No. All calculations run in your browser and nothing you type is sent to a server or saved.
What can I search to find this tool?
People find it by searching for: rr interval to bpm; ecg heart rate calculator; beat to beat interval.