Maximum Heart Rate Calculator for Men
Understanding your maximum heart rate is a crucial aspect of cardiovascular health and fitness. It represents the highest number of times your heart can beat per minute during maximal physical exertion. For men, several formulas exist to estimate this important metric, with the most common and widely accepted being the Tanaka formula.
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 <= 0) {
resultDiv.innerHTML = "Please enter a valid age (a positive number).";
return;
}
// Tanaka formula: Maximum Heart Rate = 208 – (0.7 * Age)
var maxHeartRate = 208 – (0.7 * age);
resultDiv.innerHTML = "Based on the Tanaka formula, your estimated maximum heart rate is:
" + maxHeartRate.toFixed(2) + " beats per minute (bpm)";
}
.calculator-wrapper {
font-family: sans-serif;
border: 1px solid #ccc;
padding: 20px;
border-radius: 8px;
max-width: 500px;
margin: 20px auto;
background-color: #f9f9f9;
}
.calculator-wrapper h1 {
text-align: center;
color: #333;
margin-bottom: 20px;
}
.calculator-form {
display: flex;
flex-direction: column;
gap: 15px;
}
.form-field {
display: flex;
flex-direction: column;
}
.form-field label {
margin-bottom: 5px;
font-weight: bold;
color: #555;
}
.form-field input[type="number"] {
padding: 10px;
border: 1px solid #ccc;
border-radius: 4px;
font-size: 16px;
}
.calculator-form button {
padding: 12px 20px;
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: 20px;
padding: 15px;
background-color: #e9ecef;
border: 1px solid #ced4da;
border-radius: 4px;
text-align: center;
font-size: 18px;
color: #495057;
}
.calculator-result p {
margin: 0;
}
.calculator-result strong {
color: #007bff;
}
.error {
color: #dc3545 !important;
font-weight: bold;
}