Target Heart Rate Calculator
Calculate a target training heart rate for a chosen exercise intensity, using the Karvonen method.
Disclaimer: This result is an estimate for informational purposes only and is not medical advice.
Calculate
Enter your values below.
Result
Target heart rate
0
Disclaimer: This result is an estimate for informational purposes only and is not medical advice.
Formula used
THR = ((220 − Age) − Resting HR) × Intensity% + Resting HR
Example: Age 30, resting HR 65, 70% intensity → target heart rate ≈ 151 bpm.
How to use this calculator
- Enter Age (years), Resting heart rate (bpm), Target intensity (%).
- Press Calculate to see your result instantly.
FAQ
Frequently asked questions
What is the Karvonen method?
A heart rate training formula that accounts for your resting heart rate, not just age, for a more personalized target.
How do I find my resting heart rate?
Measure your pulse first thing in the morning before getting out of bed, for the most accurate reading.
What intensity should I use for moderate exercise?
Around 50-70% is often cited as a moderate-intensity range; 70-85% for vigorous activity — check general fitness guidelines for your goals.
Should I consult a doctor before starting intense exercise?
Yes, especially if you have any underlying heart or health conditions.