Target Heart Rate Zone Calculator

Find your optimal training heart rate zones using the Karvonen formula. Train smarter by knowing exactly when you're in fat burn, cardio, or peak zones.

Age

Resting Heart Rate (BPM)

Fitness Goal

Max Heart Rate

— BPM

Zone	Range	Intensity

Disclaimer: This calculator uses the Karvonen formula (220 − age for HRmax). Individual variation exists. Consult a physician before starting high-intensity training.

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