Enter the beats counted and seconds observed into the calculator to determine the resting heart rate.
Medical disclaimer: This calculator provides general educational estimates and is not medical advice or a diagnosis. Resting heart rate and training zones can be affected by fitness level, illness/fever, stress, dehydration, pregnancy, thyroid/anemia issues, and medications (including beta blockers or stimulants). If you have heart disease, symptoms, or take heart‑rate–affecting medication, ask a clinician before using target zones. Seek urgent care for chest pain, fainting, severe shortness of breath, a new irregular heartbeat/palpitations with dizziness, or a sustained very fast heart rate at rest. Children/teens have different normal ranges. For interpretation guidance, check reputable medical organizations’ patient education resources.
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Resting Heart Rate Formula
The following formula is used to calculate a resting heart rate.
RHR (bpm)= (Beats counted / Time (s)) × 60
Resting Heart Rate Definition
A resting heart rate is an estimate of your heart rate while at rest on any given day.
How to calculate resting heart rate?
How to calculate a resting heart rate?
- First, sit at rest and relax.
Rest quietly for about 5 minutes for a more consistent reading.
- Next, count your heartbeat for 30–60 seconds.
Counting for 60 seconds is usually more accurate (and is recommended if your rhythm feels irregular).
- Finally, convert your count to beats per minute (bpm).
If you counted 30 seconds, multiply by 2; if you counted 15 seconds, multiply by 4; if you counted 10 seconds, multiply by 6 (less accurate). Or use the calculator above.
FAQ
Resting heart rate is a measure of the number of beats per minute your heart beats when sitting at rest and performing no exercise.
One common estimate is 220 − age, but actual maximum heart rate varies widely by individual (and formulas are only rough population averages). If you need a more precise target—for example, due to a medical condition or medications—consider perceived exertion (RPE/talk test) or clinician-guided exercise testing.
Aerobic fitness can lower resting heart rate over time, but sleep, stress, illness, hydration, caffeine/alcohol, smoking, and some medical conditions/medications can also affect it. If your resting heart rate changes suddenly or is persistently high/low—especially with symptoms—consider medical advice, and avoid abruptly starting or intensifying exercise if you have symptoms or known heart conditions.
