Free health tool
Heart Rate Zone Calculator
Estimate exercise heart-rate zones from age and resting heart rate.
Runs locally in your browser. No signup needed.
Why use this?
Training zones help structure cardio intensity. Use professional guidance for medical concerns.
Quick tips
- Runs locally in your browser.
- Use the result as a starting point, then adjust for your context.
- Bookmark this tool if it saves you time.
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