Heart Rate Zone Calculator

Training zones from max heart rate, with an optional Karvonen (heart rate reserve) mode

Enter your details below to calculate your result.

Your Details

AGE

RESTING HEART RATE (OPTIONAL, BPM)

Estimate only — not medical advice. Adding resting heart rate switches to the more personalized Karvonen method.

Result

190bpm

Estimated Max Heart Rate

% of Max Heart Rate method

95–114

Warm-up

114–133

Fat burn

133–152

Cardio

152–171

Hard

171–190

Max