Your maximum heart rate is the highest number of times your heart can beat per minute during intense physical exercise. It's a crucial metric for setting safe and effective exercise intensity zones. The most common and simplest method to estimate your maximum heart rate is the age-based formula. While it's an estimate and individual variations exist, it provides a good starting point for understanding your training zones.
function calculateMaxHeartRate() {
var ageInput = document.getElementById("age");
var resultDiv = document.getElementById("result");
// Clear previous results
resultDiv.innerHTML = "";
var age = parseFloat(ageInput.value);
if (isNaN(age) || age = 120) {
resultDiv.innerHTML = "Please enter a valid age between 1 and 120.";
return;
}
// The most common formula: 220 – Age
var maxHeartRate = 220 – age;
resultDiv.innerHTML = "