Heart Rate Zones

Calculate target heart rate zones using the Karvonen method.

Age

Resting HR (bpm)

Max Heart Rate190 bpm

Zone 1 — Warm-up128–140 bpm

Zone 2 — Fat Burn140–153 bpm

Zone 3 — Cardio153–165 bpm

Zone 4 — Hard165–178 bpm

Zone 5 — Maximum178–190 bpm