Karvonen Heart Rate Calculator

Find target heart rate using heart rate reserve.

Target heart rate (bpm) 151

Max heart rate (bpm) 190

Heart rate reserve (bpm) 130

Formula: target = (max − rest) × intensity + rest

Step-by-step with your numbers:

1. Values used:

2. Resting heart rate = 60 bpm

3. Age = 30 years

4. Intensity = 70 %

6. Target heart rate = 151bpm

7. Max heart rate = 190bpm

8. Heart rate reserve = 130bpm

Did we solve your problem today?

The Karvonen method personalizes target heart rate using your resting rate.

The math behind it

Max HR = 220 − age; heart rate reserve = max − resting; target = reserve × intensity% + resting.

Rest 60, age 30, 70% → ~149 bpm.

Better than %max?

Yes — it accounts for individual fitness via resting heart rate.