Mha Calculator

MHA (Maximum Heart Rate) Calculator

Calculate Your Peak Cardiac Threshold and Training Zones

Male Female

Calculation Results

Estimated Maximum Heart Rate (MHA): BPM

Based on the Tanaka Formula (208 – 0.7 x Age)

Your Target Training Zones

Zone Intensity BPM Range
Warm Up 50-60%
Fat Burn 60-70%
Aerobic 70-80%
Anaerobic 80-90%
Red Line 90-100%

Understanding Your MHA (Maximum Heart Rate)

The MHA calculator determines the maximum number of times your heart should beat per minute during high-intensity exercise. Knowing your MHA is critical for athletes, fitness enthusiasts, and those undergoing cardiovascular rehabilitation to ensure they are training at the correct intensity to achieve their specific health goals.

How MHA is Calculated

While the traditional "220 – Age" formula (Fox Formula) is widely known, our calculator utilizes the more accurate Tanaka Formula. Research indicates that the Tanaka method provides a more precise estimation across various age groups, particularly for older adults.

  • Tanaka Formula: 208 – (0.7 × Age)
  • Gulati Formula (for Women): 206 – (0.88 × Age)

The Importance of Heart Rate Zones

Training isn't just about going as fast as possible. Different "zones" trigger different physiological responses:

  • Zone 1 (Warm Up): Improves recovery and prepares the heart for higher loads.
  • Zone 2 (Fat Burn): Optimizes the body's ability to use fat as a fuel source and builds endurance.
  • Zone 3 (Aerobic): Enhances cardiovascular capacity and improves lung efficiency.
  • Zone 4 (Anaerobic): Increases lactate threshold and high-speed endurance.
  • Zone 5 (Red Line): Maximum performance, usually reserved for interval training and elite athletes.

Disclaimer: This MHA calculator provides an estimate. Individual variances occur based on genetics, fitness level, and medication. Always consult with a healthcare professional before starting a high-intensity exercise program.

function calculateMHA() { var age = parseFloat(document.getElementById('mhaAge').value); var rhr = parseFloat(document.getElementById('mhaRHR').value) || 0; var gender = document.getElementById('mhaGender').value; if (!age || age 120) { alert("Please enter a valid age."); return; } var mha; if (gender === 'female') { // Using Gulati formula for women for higher accuracy mha = 206 – (0.88 * age); } else { // Using Tanaka formula for men mha = 208 – (0.7 * age); } mha = Math.round(mha); document.getElementById('mhaValue').innerText = mha; // Calculate Zones using the Karvonen Formula (Heart Rate Reserve) if RHR is provided, // otherwise fallback to a percentage of MHA. function getZoneRange(minPercent, maxPercent) { var minBpm, maxBpm; if (rhr > 0 && rhr < mha) { var hrr = mha – rhr; minBpm = Math.round((hrr * minPercent) + rhr); maxBpm = Math.round((hrr * maxPercent) + rhr); } else { minBpm = Math.round(mha * minPercent); maxBpm = Math.round(mha * maxPercent); } return minBpm + " – " + maxBpm + " BPM"; } document.getElementById('zone1').innerText = getZoneRange(0.50, 0.60); document.getElementById('zone2').innerText = getZoneRange(0.60, 0.70); document.getElementById('zone3').innerText = getZoneRange(0.70, 0.80); document.getElementById('zone4').innerText = getZoneRange(0.80, 0.90); document.getElementById('zone5').innerText = getZoneRange(0.90, 1.00); document.getElementById('mhaResultArea').style.display = 'block'; }

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