Calculate Max Heart Rate Running

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Maximum Heart Rate Calculator

Your maximum heart rate (MHR) is the highest number of times your heart can beat per minute during maximal physical exertion. It's a crucial metric for understanding your cardiovascular fitness and for designing effective training programs. A common and widely used formula to estimate your MHR is the Tanaka formula, which is considered more accurate than older methods.

The Tanaka formula is: 208 – (0.7 x Age). This formula is generally reliable for most individuals.

Knowing your estimated MHR helps you:

  • Set Training Zones: You can calculate your target heart rate zones for different types of workouts (e.g., endurance, tempo, interval training).
  • Monitor Intensity: It provides a benchmark to gauge the intensity of your runs.
  • Track Progress: As your fitness improves, your MHR may slightly increase, or you may be able to sustain higher percentages of your MHR for longer periods.
function calculateMaxHeartRate() { var ageInput = document.getElementById("age"); var resultDiv = document.getElementById("result"); var age = parseFloat(ageInput.value); if (isNaN(age) || age <= 0) { resultDiv.innerHTML = "Please enter a valid age."; return; } // Tanaka formula: 208 – (0.7 * Age) var maxHeartRate = 208 – (0.7 * age); resultDiv.innerHTML = "Your estimated Maximum Heart Rate is: " + maxHeartRate.toFixed(0) + " beats per minute (bpm)"; } #max-heart-rate-calculator { font-family: sans-serif; border: 1px solid #ddd; padding: 20px; border-radius: 8px; max-width: 500px; margin: 20px auto; background-color: #f9f9f9; } #max-heart-rate-calculator h2 { text-align: center; color: #333; } .input-group { margin-bottom: 15px; } .input-group label { display: block; margin-bottom: 5px; font-weight: bold; color: #555; } .input-group input[type="number"] { width: calc(100% – 22px); padding: 10px; border: 1px solid #ccc; border-radius: 4px; font-size: 16px; } #max-heart-rate-calculator button { display: block; width: 100%; padding: 12px; background-color: #4CAF50; color: white; border: none; border-radius: 4px; font-size: 18px; cursor: pointer; transition: background-color 0.3s ease; } #max-heart-rate-calculator button:hover { background-color: #45a049; }

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