Calculate Rate on Ecg

ECG Heart Rate Calculator

This calculator helps you quickly determine your heart rate from an electrocardiogram (ECG) strip. Understanding your heart rate is crucial for assessing cardiovascular health.

Method 1: Count Large Boxes (for slower rates) Method 2: Count Small Boxes (for faster rates) Method 3: 6-Second Strip (common for irregular rhythms)
function updateInputLabels() { var method = document.getElementById("ecgRateMethod").value; document.getElementById("method1Inputs").style.display = (method === "largeBoxes") ? "block" : "none"; document.getElementById("method2Inputs").style.display = (method === "smallBoxes") ? "block" : "none"; document.getElementById("method3Inputs").style.display = (method === "6SecondStrip") ? "block" : "none"; } function calculateHeartRate() { var heartRate = 0; var resultDiv = document.getElementById("result"); var method = document.getElementById("ecgRateMethod").value; if (method === "largeBoxes") { var largeBoxesCount = parseFloat(document.getElementById("largeBoxesCount").value); if (isNaN(largeBoxesCount) || largeBoxesCount <= 0) { resultDiv.innerHTML = "Please enter a valid number of large boxes."; return; } // Standard ECG paper: 1 large box = 0.2 seconds. // Heart Rate = 300 / Number of large boxes heartRate = 300 / largeBoxesCount; } else if (method === "smallBoxes") { var smallBoxesCount = parseFloat(document.getElementById("smallBoxesCount").value); if (isNaN(smallBoxesCount) || smallBoxesCount <= 0) { resultDiv.innerHTML = "Please enter a valid number of small boxes."; return; } // Standard ECG paper: 1 small box = 0.04 seconds. // Heart Rate = 1500 / Number of small boxes heartRate = 1500 / smallBoxesCount; } else if (method === "6SecondStrip") { var qrsComplexes = parseFloat(document.getElementById("qrsComplexes").value); if (isNaN(qrsComplexes) || qrsComplexes 0) { resultDiv.innerHTML = "Calculated Heart Rate: " + heartRate.toFixed(0) + " bpm"; } else { resultDiv.innerHTML = "Please select a method and enter valid inputs."; } } // Initialize input visibility on page load updateInputLabels(); .calculator-container { font-family: sans-serif; max-width: 600px; margin: 20px auto; padding: 20px; border: 1px solid #ccc; border-radius: 8px; background-color: #f9f9f9; } .calculator-container h2 { text-align: center; margin-bottom: 20px; color: #333; } .calculator-container p { text-align: justify; margin-bottom: 20px; color: #555; line-height: 1.6; } .calculator-form .form-group { margin-bottom: 15px; } .calculator-form label { display: block; margin-bottom: 5px; font-weight: bold; color: #444; } .calculator-form input[type="number"], .calculator-form select { width: calc(100% – 12px); padding: 8px; border: 1px solid #ccc; border-radius: 4px; box-sizing: border-box; /* Include padding and border in the element's total width and height */ } .calculator-form button { display: block; width: 100%; padding: 10px 15px; background-color: #007bff; color: white; border: none; border-radius: 4px; font-size: 16px; cursor: pointer; transition: background-color 0.3s ease; } .calculator-form button:hover { background-color: #0056b3; } .calculator-result { margin-top: 25px; padding: 15px; border: 1px solid #d4edda; background-color: #d4edda; color: #155724; border-radius: 4px; text-align: center; font-size: 1.1em; } .calculator-result strong { font-weight: bold; }

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