1. What is Maximum Heart Rate (MHR)?

Maximum Heart Rate (MHR) is the highest number of beats per minute your heart can achieve during maximum physical exertion. The most common formula for estimating MHR is 220 minus your age.

2. How Does the Calculator Work?

The calculator uses the standard MHR equation:

Where:

• \( Age \) — Age in years

Explanation: This formula provides a simple estimate of maximum heart rate based on age, which is widely used for exercise intensity prescription.

3. Importance of MHR Calculation

Details: Knowing your maximum heart rate helps determine appropriate exercise intensity zones for cardiovascular training, fat burning, and overall fitness improvement.

4. Using the Calculator

Tips: Enter your age in years. The value must be valid (between 1-120 years).

5. Frequently Asked Questions (FAQ)

Q1: How accurate is the 220-age formula?
A: While widely used, it's an estimation. Individual maximum heart rates can vary by ±10-15 beats per minute from the calculated value.

Q2: Are there alternative formulas for MHR?
A: Yes, other formulas exist such as 208 - (0.7 × age) or 211 - (0.64 × age), which may be more accurate for certain populations.

Q3: How should I use my MHR for exercise?
A: MHR is used to calculate target heart rate zones. For moderate exercise, aim for 50-70% of MHR; for vigorous exercise, 70-85% of MHR.

Q4: Does fitness level affect maximum heart rate?
A: Maximum heart rate is primarily determined by age and genetics, not fitness level. However, fit individuals can sustain higher percentages of their MHR for longer periods.

Q5: When should I measure my heart rate during exercise?
A: Measure pulse at the wrist or neck for 15 seconds and multiply by 4, or use a heart rate monitor for more accurate readings during exercise.