Health

Target Heart Rate Calculator

Train smarter with the Karvonen formula — personalized zones based on your max and resting heart rate.

💔 Karvonen formula

Zones use your heart rate reserve — far more accurate than age-only charts.

🏃 5 training zones

From fat-burn to VO2 max, see the full intensity ladder.

👥 Personalized

Your resting heart rate personalizes every single result.

📊 Full breakdown table

All five zones with exact BPM ranges in one view.

More health calculators

Track training, heart and body metrics.

BMR Calculator → TDEE Calculator Calories Burned

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