Heart Rate Calculator - Target HR Zones & VO2max Estimate

Calculate target heart rate zones, max HR, VO2max estimate, recovery rate, and track resting HR trends. Free fitness calculator.

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Results

Target HR Zone (Fat Burn)
Max HR: BPM (Tanaka)
Training Zones (Karvonen)
VO2max Est.
Recovery Rate
Readings
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How it works

Heart Rate Calculator - Target HR Zones & VO2max Estimate

Calculate your maximum heart rate using the Tanaka formula (208 − 0.7 × age) and personalized target zones using the Karvonen method (Fat Burn, Cardio, Peak).

Estimate cardio fitness (VO2max) from resting heart rate, assess recovery category, and track resting HR trends over time.

Lower resting HR generally indicates better cardiovascular fitness. Normal range: 60–100 BPM for adults.