Fat Burning Zone Calculator

Find 60–70% heart-rate targets for easier aerobic work

📖 Fat Burning Zone Calculator

The so-called fat-burning zone uses the Karvonen formula: Target HR = ((HRmax − HRrest) × intensity) + HRrest, where HRmax ≈ 220 − age.

Lower-intensity cardio prioritizes fat oxidation but burns fewer calories overall.
Include higher-intensity days for cardiovascular improvements.
Re-test resting HR every few weeks as fitness changes.

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