Heart Rate Zones for a 40-Year-Old
A 40-year-old has an estimated maximum heart rate of 180 bpm, with zone thresholds that shift compared to younger athletes.
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.
Heart rate zones shift as you age — see the complete training zone chart for a 40-year-old with a typical resting heart rate of 65 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.