Heart Rate Zones Calculator
Calculate training zones using the Karvonen method.
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What This Calculator Does
Calculate training zones using the Karvonen method.
It combines Age, Resting Heart Rate to estimate Estimated Max HR, Zone 1 (Recovery), Zone 2 (Endurance).
Formula & Method
Core equations: Karvonen formula: THR=HR_{rest}+(HR_{max}-HR_{rest})\cdot intensity with HR_{max}\approx220-age.
Notation used in the formulas: R = Estimated Max HR; x_{1} = Age; x_{2} = Resting Heart Rate.
Method summary: inputs are normalized to consistent units, core equations are evaluated, then secondary values are derived and rounded for display.
Use this calculator for quick scenario analysis. Start with baseline values, change one driver at a time, and compare how sensitive the results are to each input shown above.
Inputs Used
- Age: Used directly in the calculation.
- Resting Heart Rate: Used directly in the calculation.
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