Find your ideal exercise heart rate zones in seconds. Enter your age and resting heart rate to get personalised training zones — free, instant and with no sign-up needed.
These figures are general estimates only and are not medical advice. Check with a professional before starting vigorous exercise.
How to Use
- Enter your age in years.
- Enter your resting heart rate in beats per minute.
- Click Calculate Zones to see your maximum heart rate and training zones.
- Press Clear to start over.
Key Features
- Training zones based on the Karvonen formula.
- Maximum heart rate estimate included.
- Five zones, from recovery to maximum effort.
- General estimates only — this tool is not medical advice.
- 100% private — everything is calculated in your browser.
FAQs
Is this target heart rate calculator free?
Yes. It is completely free with no sign-up and no limits.
How are the zones worked out?
Your maximum heart rate is estimated as 220 minus your age. Each zone is then calculated with the Karvonen formula: heart rate reserve multiplied by the intensity, plus your resting heart rate.
Is this medical advice?
No. The results are general estimates only and are not medical advice. Check with a qualified professional before starting a vigorous exercise programme.
Is my data stored anywhere?
No. All calculations happen in your browser and nothing you enter is sent or stored.