Ideal heart rate zones for exercise.
Real-time clinical computation active
Enter biometric metrics to generate report
This assessment provides statistical probability and mathematical interpretation based on validated clinical equations. It is not a diagnostic tool.
Maximize your training efficiency by staying in the right heart rate zones for your goals.
Developed by MJ Karvonen in 1957, this formula was a breakthrough in exercise physiology because it utilized 'Heart Rate Reserve'—the difference between your max and resting heart rate.
Measure your resting heart rate immediately after waking up for several days to get an accurate average for this calculator. Even a 5bpm error can shift your training zones significantly.