Cardio Zone Calculator

Calculate your five cardiovascular training zones based on heart rate for targeted workouts.

Your Parameters

years
bpm

Required for Karvonen method

Max HR: 190 bpm | HR Reserve: 130 bpm

Your Training Zones

Zone 1 - Recovery

125 - 138 bpm | Active recovery, warm-up

Zone 2 - Endurance

138 - 151 bpm | Aerobic base building

Zone 3 - Tempo

151 - 164 bpm | Aerobic capacity

Zone 4 - Threshold

164 - 177 bpm | Lactate threshold

Zone 5 - VO2 Max

177 - 190 bpm | Maximum effort

Max Heart Rate
190 bpm
HR Reserve
130 bpm

Recommended Distribution

Zone 1 (Recovery): ~10% of training

Zone 2 (Endurance): ~65% of training

Zone 3 (Tempo): ~15% of training

Zone 4 (Threshold): ~8% of training

Zone 5 (VO2 Max): ~2% of training