Calculating Heart Rate in Ecg

ECG Heart Rate Calculator

This calculator helps you determine your heart rate from an electrocardiogram (ECG) strip. The ECG is a non-invasive test that records the electrical activity of the heart. By measuring the time between heartbeats, we can calculate the heart rate.

There are a few common methods to calculate heart rate from an ECG, depending on the paper speed of the ECG machine. This calculator uses the most common method assuming a paper speed of 25 mm/second.

function calculateHeartRate() { var rrInterval = parseFloat(document.getElementById("rrInterval").value); var paperSpeed = parseFloat(document.getElementById("paperSpeed").value); var resultElement = document.getElementById("result"); if (isNaN(rrInterval) || rrInterval <= 0) { resultElement.innerHTML = "Please enter a valid R-R interval greater than 0."; return; } if (isNaN(paperSpeed) || paperSpeed <= 0) { resultElement.innerHTML = "Please enter a valid paper speed greater than 0."; return; } // Calculate time in seconds for one heartbeat var timePerBeatSeconds = rrInterval / paperSpeed; // Calculate heart rate in beats per minute (BPM) var heartRateBPM = 60 / timePerBeatSeconds; resultElement.innerHTML = "

Result:

Your calculated heart rate is: " + heartRateBPM.toFixed(2) + " BPM"; } #ecg-heart-rate-calculator { font-family: sans-serif; border: 1px solid #ccc; padding: 20px; border-radius: 8px; max-width: 400px; margin: 20px auto; background-color: #f9f9f9; } #ecg-heart-rate-calculator h2 { text-align: center; color: #333; margin-bottom: 15px; } .calculator-inputs { margin-bottom: 15px; } .input-group { margin-bottom: 10px; } .input-group label { display: block; margin-bottom: 5px; font-weight: bold; color: #555; } .input-group input[type="number"] { width: calc(100% – 22px); /* Adjust for padding and border */ padding: 10px; border: 1px solid #ccc; border-radius: 4px; box-sizing: border-box; /* Include padding and border in the element's total width and height */ } #ecg-heart-rate-calculator button { display: block; width: 100%; padding: 10px 15px; background-color: #4CAF50; color: white; border: none; border-radius: 4px; cursor: pointer; font-size: 16px; transition: background-color 0.3s ease; } #ecg-heart-rate-calculator button:hover { background-color: #45a049; } .calculator-result { margin-top: 20px; padding: 15px; border: 1px solid #ddd; border-radius: 4px; background-color: #fff; text-align: center; } .calculator-result strong { color: #4CAF50; }

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