RHR Calculator
What Is Resting Heart Rate?
Resting heart rate (RHR) is the number of times your heart beats per minute while your body is fully at rest. It is usually measured after sitting quietly for several minutes or soon after waking up.
A lower RHR can be common in well-trained athletes, while a higher RHR may reflect stress, dehydration, poor sleep, caffeine, illness, medication, or low fitness. The trend over time is usually more useful than a single reading.
RHR Formula
RHR = total heartbeats ÷ time counted in minutes
For example, if you count 32 beats in 30 seconds, your RHR is 32 ÷ 0.5 = 64 bpm. If you count for 15 seconds, multiply by 4. If you count for 30 seconds, multiply by 2. If you count for 60 seconds, the count is already your bpm.
How This Calculator Works
Count your pulse
Find your pulse at your wrist or neck and count the beats for 15, 30, or 60 seconds while resting.
Convert to bpm
The calculator converts your pulse count into beats per minute using the selected time interval.
Compare the result
Your bpm is placed into a general interpretation range based on the age group you selected.
Track the trend
Repeating the same method over time helps show whether your resting heart rate is stable, rising, or improving.
General Resting Heart Rate Ranges
| Group | Typical resting range |
|---|---|
| Children | 70–110 bpm |
| Teens | 60–100 bpm |
| Adults | 60–100 bpm |
| Trained athletes | 40–60 bpm |
These ranges are general educational guides. Normal can vary by age, fitness level, medication, hydration, temperature, stress, and medical history.
Tips for an Accurate Reading
Frequently Asked Questions
What is a good resting heart rate?
For most adults, a resting heart rate between 60 and 100 bpm is considered typical. Athletes may have a lower RHR because their hearts pump more efficiently.
When is the best time to measure RHR?
The best time is in the morning before caffeine, exercise, or stress. You can also measure after sitting quietly for at least 5 minutes.
Why is my resting heart rate high?
A high reading can happen after caffeine, poor sleep, dehydration, stress, fever, exercise, or certain medications. If it stays high, discuss it with a healthcare professional.
Can resting heart rate be too low?
Yes. A low RHR can be normal in trained athletes, but if it comes with dizziness, fainting, fatigue, or shortness of breath, it should be evaluated.
How often should I check my RHR?
Checking a few times per week under the same conditions is enough for most people. Daily tracking can be helpful if you monitor fitness, stress, sleep, or recovery.
