Heart Rate Zone Calculator

Find your target heart rates for optimal fat burn and cardio fitness.

Age (years)

Resting Heart Rate (optional, bpm)

Max HR: X bpm

Zone	% Max	BPM	Purpose
1	50-60%	X-Y	Warm-up
2	60-70%	X-Y	Fat Burn
3	70-80%	X-Y	Endurance
4	80-90%	X-Y	Cardio
5	90-100%	X-Y	Max Effort