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❤️ Heart Rate Zones Calculator

❤️ Heart Rate Zones Calculator

Calculate Karvonen training zones, VO₂ max estimates, heart rate variability (HRV), and recovery metrics. Professional-grade analytics for athletes!

👤 User Profile

📊 Calculation Method

Fox method: 220 - age (most common)

⌚ Live Pulse Measurement

❤️
Tap rhythmically with your heartbeat. Wait for beeps or use your camera flashlight.
Current BPM
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Avg BPM
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HRV
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Rhythm
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📚 Understanding Heart Rate Metrics
Max HR: Maximum heart rate during all-out effort. Varies by method.
HRV: Heart Rate Variability indicates recovery and stress levels.
VO₂ Max: Maximum oxygen consumption during exercise.
HR Reserve: Difference between max and resting HR.
Training Zones:
  • Zone 1 (50-60%): Recovery, light activity
  • Zone 2 (60-70%): Aerobic, fat burning
  • Zone 3 (70-80%): Tempo, endurance building
  • Zone 4 (80-90%): Threshold, lactate buildup
  • Zone 5 (90-100%): Maximal, VO₂ max training

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