Resting Heart Rate Zone Calculator
Interpret your resting heart rate, add athlete context, and optionally estimate HRR-based training zones from age and resting heart rate.
What resting heart rate can tell you
Resting heart rate is the number of times your heart beats per minute when you are calm and at rest. Fitness, stress, sleep, hydration, caffeine, illness, and medications can all influence it. For athletes, trends in resting heart rate can sometimes give useful recovery context.
General interpretation
The American Heart Association says a normal resting heart rate for a calm adult sitting or lying down is generally between 60 and 100 beats per minute. Its heart-rate and pulse guide also notes that lower resting rates can occur in people who are physically fit.
Optional training-zone support
If you enter age and choose a max-HR estimate, this calculator also shows simple HRR-based training ranges. That makes it a bridge between resting heart rate interpretation and exercise-zone planning.
When not to overuse the number
Resting heart rate should not be interpreted in isolation. A very low or high reading can be normal for some people and concerning for others depending on symptoms and medical context. If you have dizziness, chest pain, fainting, shortness of breath, or a sudden unexplained change, seek professional advice.
Frequently asked questions
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A common adult range is about 60 to 100 bpm when calm and at rest, but athletes and highly trained people may sit below that without it being abnormal.
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No. Lower can reflect fitness, but it can also reflect medications or medical issues in some cases. Symptoms and context matter.
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Measure after waking or after sitting quietly for several minutes. Try to use similar conditions each time.
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Sleep, stress, heat, dehydration, alcohol, caffeine, illness, and training fatigue can all change it.
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Yes, trends can be useful. A sudden rise above your normal baseline can suggest fatigue, stress, or illness, but it should be interpreted with other signs.