Find your optimal heart rate training zones using the Karvonen formula for fat burn, cardio, and peak performance.
Find your optimal heart rate training zones using the Karvonen formula for fat burn, cardio, and peak performance.
Karvonen: Target = Resting + (Max – Resting) × %Intensity
Age 30, resting HR 65 → Max 190, Cardio zone 153–171 bpm.
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What is Heart Rate Zone Calculator?
Find your optimal heart rate training zones using the Karvonen formula for fat burn, cardio, and peak performance.
What formula does this use?
This calculator uses: Karvonen: Target = Resting + (Max – Resting) × %Intensity
Is this calculator free?
Yes! All calculators on CalcNest AI are 100% free with no account required.
Is my data safe?
Absolutely. All calculations run locally in your browser. We never store or transmit your input data.