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â¤ī¸ Heart Rate Zone Calculator

Calculate your Maximum Heart Rate (MaxHR) and identify your personalized target training intensity zones. Tracking target beats per minute (BPM) helps optimize cardiovascular exercise, fat burning, and peak athletic endurance.

What are Target Heart Rate Zones?

Your target heart rate is a range of numbers that reflects how fast your heart should beat during cardiovascular exercise. Exercising within specific percentages of your Maximum Heart Rate ensures your body activates the intended metabolic paths.

Understanding the Intensity Zones

Our calculator charts out your intensity parameters into five distinct clinical training zones:
Zone 1: Light Recovery (50% - 60%): Ideal for warming up, cool-downs, and active muscle recovery.
Zone 2: Fat Burn Zone (60% - 70%): Maximizes the percentage of energy derived specifically from stored fat oxidation.
Zone 3: Aerobic / Cardio (70% - 80%): Builds optimal cardiovascular stamina, improves heart efficiency, and lung capacity.
Zone 4: Anaerobic Performance (80% - 90%): Increases lactic acid threshold tolerance, speed capability, and power.
Zone 5: Maximum Peak Output (90% - 100%): Intended only for brief elite high-intensity intervals (HIIT).


📚 Medical References & Sources

  1. American Heart Association (AHA). Target Heart Rates Chart and Exercise Guidelines.
  2. Fox SM, Naughton JP. Physical activity and the prevention of coronary heart disease parameters. Preventive Medicine.