Fat-burning Heart Rate Calculator

Understanding Your Fat-Burning Heart Rate Zone

The fat-burning heart rate zone is a range of your maximum heart rate that is theorized to be optimal for burning calories from fat. When you exercise within this zone, your body relies more on fat as a fuel source compared to carbohydrates.

To calculate your fat-burning heart rate zone, you first need to estimate your maximum heart rate (MHR). A common and simple formula for estimating MHR is 220 minus your age.

Once you have your MHR, the fat-burning zone is typically considered to be between 60% and 70% of your MHR. Exercising in this zone can be beneficial for endurance and for improving your body's ability to utilize fat for energy, especially for longer, lower-intensity workouts.

It's important to note that while this zone is effective for fat utilization during exercise, the total calories burned might be lower than in higher-intensity zones. For overall weight loss, a combination of different intensity levels and a calorie deficit through diet is usually most effective. Always consult with a healthcare professional before starting any new exercise program.

Fat-Burning Heart Rate Zone Calculator

function calculateFatBurningZone() { var ageInput = document.getElementById("age"); var resultDiv = document.getElementById("result"); resultDiv.innerHTML = ""; // Clear previous results var age = parseFloat(ageInput.value); if (isNaN(age) || age <= 0) { resultDiv.innerHTML = "Please enter a valid age."; return; } // Estimate Maximum Heart Rate (MHR) var maxHeartRate = 220 – age; // Calculate Fat Burning Zone (60% to 70% of MHR) var fatBurningLowerBound = maxHeartRate * 0.60; var fatBurningUpperBound = maxHeartRate * 0.70; resultDiv.innerHTML = "

Your Fat-Burning Heart Rate Zone:

" + "Estimated Maximum Heart Rate (MHR): " + maxHeartRate.toFixed(0) + " bpm" + "Fat Burning Zone: " + fatBurningLowerBound.toFixed(0) + " bpm to " + fatBurningUpperBound.toFixed(0) + " bpm" + "This is an estimation. Consult your doctor for personalized advice."; } .calculator-container { font-family: sans-serif; border: 1px solid #ddd; padding: 20px; border-radius: 8px; max-width: 700px; margin: 20px auto; background-color: #f9f9f9; } .article-content { margin-bottom: 25px; line-height: 1.6; color: #333; } .article-content h2 { color: #0056b3; margin-bottom: 15px; } .article-content p { margin-bottom: 10px; } .calculator-inputs { background-color: #fff; padding: 15px; border-radius: 5px; border: 1px solid #eee; margin-bottom: 20px; } .calculator-inputs h3 { color: #0056b3; margin-top: 0; margin-bottom: 15px; } .input-group { margin-bottom: 15px; display: flex; align-items: center; gap: 10px; } .input-group label { font-weight: bold; color: #555; flex-basis: 150px; /* Fixed width for labels */ } .input-group input[type="number"] { padding: 8px; border: 1px solid #ccc; border-radius: 4px; width: 100px; /* Smaller width for number inputs */ box-sizing: border-box; } button { background-color: #28a745; color: white; padding: 10px 15px; border: none; border-radius: 5px; cursor: pointer; font-size: 16px; transition: background-color 0.3s ease; } button:hover { background-color: #218838; } .calculator-results { background-color: #e9ecef; padding: 15px; border-radius: 5px; border: 1px solid #dee2e6; text-align: center; } .calculator-results h4 { color: #0056b3; margin-top: 0; margin-bottom: 10px; } .calculator-results p { margin-bottom: 5px; color: #333; } .calculator-results strong { color: #007bff; } .calculator-results .error { color: #dc3545; font-weight: bold; } .calculator-results small { color: #6c757d; font-size: 0.8em; }

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