Find your optimal training heart rate zones using the Karvonen method.
For Karvonen method. Leave blank for simple %HRmax.
This calculator determines your five training heart rate zones using either the simple %HRmax method or the Karvonen formula (when you provide resting heart rate). Each zone targets different fitness benefits — from fat burning to VO2 max intervals.
Warm-up, fat burn, aerobic, anaerobic, and VO2 max.
Uses heart rate reserve for more accurate personalized zones.
Visual distinction between each intensity level.
Estimated using 220 minus age formula.