Heart Rate Calculator
Calculate your maximum, resting, and target heart rate based on your age.
Formulas:
Maximum Heart Rate (MHR) = 220 − age
Target Heart Rate (50–85% of MHR):
- Lower = 0.50 × MHR
- Upper = 0.85 × MHR
Optional: Karvonen Formula using Resting Heart Rate (RHR):
Target = ((MHR − RHR) × intensity) + RHR