Heart Rate Zones for a 40-Year-Old
At age 40, your estimated max HR is around 180 bpm, setting different zone boundaries than in your 30s.
How to use this tool
- Enter age and resting heart rate in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your estimated max hr and the full breakdown beneath it.
Find your five heart rate training zones at age 40 based on an estimated max heart rate of 180 bpm.
Frequently asked questions
- What is the Karvonen method?
- It calculates training zones as a percentage of heart-rate reserve (max HR − resting HR), then adds resting HR. This personalises zones better than using max HR alone.
- How do I find my resting heart rate?
- Measure your pulse first thing in the morning before getting up, ideally on several days and average the results.