Sports
Heart Rate Zone Calculator
Estimate five training zones using age-based or measured maximum heart rate and the heart-rate-reserve method. Compare intensity ranges, visualize beats-per-minute targets, and export a professional PDF training reference.
Maximum heart rate-
Heart-rate reserve-
Zone 2 range-
Zone 4 range-
Calculation method-
Training intensity
Five-zone heart-rate training plan
Target heart rate by zoneKarvonen heart-rate-reserve method
| Zone | Intensity | Target HR range | Typical focus | Effort cue |
|---|
Training zones
Heart-rate reserve and zone bands
Recovery, aerobic, tempo, threshold, and hard efforts are separated into bpm bands.
Heart-rate reserve and zone bands
Max HR0 bpm
Reserve0 bpm
Zone 20 bpm
Zone 40 bpm
How to use Heart Rate Zone Calculator
- Enter age, resting heart rate, and measured maximum heart rate if available.
- Review the selected method, estimated maximum heart rate, reserve, and key zone ranges.
- Use the zone table to match training intensity with recovery, aerobic base, threshold, and hard efforts.
Calculator guide
Understanding Heart Rate Zone Calculator
Heart-rate-reserve zones combine resting and maximum heart rate to create individualized intensity bands. They are planning estimates and should be interpreted with effort, symptoms, training history, and professional advice.
Calculation method
How the calculation works
Karvonen target heart rate = resting heart rate + intensity x (maximum heart rate - resting heart rate). Use a measured maximum when entered; otherwise estimate maximum as 208 minus 0.7 times age. Subtract resting rate for reserve, multiply by zone intensity, then add resting rate.
Heart-rate zone method
Health and device limits
Worked situations
Practical examples
- Use Heart Rate Zone Calculator for a quick everyday estimate.
- Change any input to compare another scenario.
Better inputs
Useful tips
- Measure resting rate under consistent calm conditions.
- Use a professionally supervised maximum test when accuracy is important.
- Adjust training for heat, fatigue, medication, illness, and perceived exertion.
Before relying on the result
Limitations and common mistakes
- Age formulas have substantial individual error.
- Medications and health conditions can change heart-rate response.
- Zones are not medical clearance or a personalized training prescription.
Reference
Key terms
- HRmax
- Maximum heart rate used by the model.
- Resting HR
- Heart rate measured at rest.
- HRR
- Heart-rate reserve: maximum minus resting rate.
- Karvonen
- Method applying intensity to heart-rate reserve.
Important note
Calculated from the entered performance values using the displayed method. Health, fitness, terrain, weather, equipment, and event conditions can change real-world outcomes.
Frequently asked questions
Should I enter a measured maximum?
Use a reliable measured value when available; otherwise the age formula provides a broad estimate.
Why include resting heart rate?
It individualizes the target through heart-rate reserve.
Are zones exact boundaries?
No. They are planning ranges, and physiological thresholds vary.
Can medication affect zones?
Yes. Discuss exercise intensity with a qualified professional when medication or health conditions affect heart rate.