Target Heart Rate Zones
Calculate your training zones using the Karvonen formula.
Zone 1 (Warm Up)
50% - 60% of HR Reserve
128 - 140 bpm
Zone 2 (Fat Burn)
60% - 70% of HR Reserve
140 - 153 bpm
Zone 3 (Aerobic)
70% - 80% of HR Reserve
153 - 165 bpm
Zone 4 (Anaerobic)
80% - 90% of HR Reserve
165 - 178 bpm
Zone 5 (Max Effort)
90% - 100% of HR Reserve
178 - 190 bpm
Estimated Max Heart Rate: 190 bpm