MHR and THR Self-Check You have learned to calculate Maximum Heart Rate and Target Heart Rate zone. Here’s the chance to check your understanding. Enter your age and then calculate the MHR and THR zone.

Calculate your Target Heart Rate zone

Step 1

Enter your age:

Step 2

Calculate your Maximum Heart Rate

Hint: MHR = 220 - your age

Enter the MHR: beats per minute

Step 3

Find your Resting Heart Rate

Enter your RHR

Step 4

Calculate your Target Heart Rate zone

Hint: Target Heart Rate zone: [(MHR-RHR)*.5] + RHR
and
Target Heart Rate zone upper limit: [(MHR-RHR)*.85] + RHR

Enter the THR zone: to beats per minute