Age 35, 50-85%
- Estimated max
- 185 bpm
- Heart-rate reserve
- 125-167 bpm
- Intensity
- 50-85%
Target Heart Rate Calculator
Use this free target heart rate calculator to estimate moderate, vigorous, or general exercise heart-rate zones.
Research-based formula Estimate limits shown Examples included Private history
Formula steps
- Estimate maximum heart rate as 220 minus age.
- Multiply maximum heart rate by the selected intensity range.
- If resting heart rate is entered, also show the heart-rate reserve estimate.
How to use the target heart rate calculator
- Enter the requested measurements, dates, lab values, or workout details.
- Check that the units and formula assumptions match what the tool is asking for.
- Press the calculate button to see the answer, supporting metrics, and formula steps.
- Read the estimate with the health disclaimer in mind, then copy the result if you need it for notes.
Common uses
Estimate moderate-intensity heart-rate range.
Estimate vigorous-intensity heart-rate range.
Compare simple max-heart-rate and heart-rate-reserve methods.
Use zones as broad exercise guidance.
Examples
Target bpm range
Moderate bpm range
Heart-rate reserve range
Frequently asked questions
Quick answers about formulas, inputs, estimate limits, professional guidance, examples, and private in-browser history.
What can I use the Target Heart Rate Calculator for?
Use it for quick educational estimates, planning, comparison, and trend checks. Health and fitness results should be interpreted with context, not as a diagnosis.
How does the Target Heart Rate Calculator calculate the result?
The calculator estimates maximum heart rate as 220 minus age, then multiplies by the selected intensity range. It also shows heart-rate reserve when resting pulse is entered.
Is this medical advice?
No. This page provides an educational estimate only. Talk with a qualified health professional before making medical, pregnancy, nutrition, medication, or safety decisions.
Are my health inputs private?
Yes. The calculator runs in your browser tab. Recent answers stay only on the page while you use it and are not sent to a server.