You can tell your heart rate by feeling your pulse at your wrist or neck, counting the beats, and doing simple math. A normal resting heart rate for adults falls between 60 and 100 beats per minute (bpm). The whole process takes less than a minute once you know where to place your fingers.
Checking Your Pulse by Hand
The two easiest places to feel your heartbeat are your wrist and your neck. Both give you the same information, so pick whichever spot gives you a stronger, clearer pulse.
At your wrist: Turn one hand palm-up. On the thumb side of your wrist, find the soft spot between the bone and the tendon. Place the tips of your index and middle fingers from your other hand there and press lightly until you feel a steady tapping. Don’t push too hard, because that can actually compress the artery and make the pulse harder to detect.
At your neck: Place two fingertips on one side of your neck, just next to your windpipe. You should feel the pulse almost immediately. Avoid pressing on both sides of your neck at the same time.
One important detail: don’t use your thumb. Your thumb has its own pulse, which can mix with the one you’re trying to measure and throw off your count.
Counting the Beats
Once you feel a steady pulse, look at a clock or start a timer. You have a few options for how long to count:
- Full 60 seconds: Count every beat for a full minute. This is the most accurate method.
- 30 seconds: Count the beats for 30 seconds and multiply by 2.
- 15 seconds: Count the beats for 15 seconds and multiply by 4.
Shorter counting windows are faster but introduce more room for error. If you miscount by one beat in a 15-second window, your final number is off by 4 bpm. Over a full minute, a one-beat miscount is just a one-beat error. If your pulse feels irregular or you’re getting inconsistent numbers, count for the full 60 seconds.
Using a Smartwatch or Phone
Most smartwatches and fitness trackers measure your heart rate continuously using a light sensor on the back of the device. The sensor shines light into your skin and detects changes in blood flow with each heartbeat. For a basic resting heart rate reading, these devices are generally reliable.
Where wearables really shine is in detecting irregular rhythms. In large-scale studies, smartwatches from Apple, Fitbit, and Samsung all detected atrial fibrillation (a common irregular heartbeat) with sensitivities above 87%, and some exceeded 96% accuracy. Smartphone apps that use your phone’s camera to read your pulse through your fingertip have shown similar performance, with combined sensitivity around 94% and specificity around 96% for spotting irregular rhythms.
That said, wearables can give inaccurate readings during intense movement, if the band is too loose, or if the sensor is dirty. If a reading looks surprisingly high or low, check it manually to confirm.
What Your Resting Heart Rate Means
For adults, 60 to 100 bpm at rest is considered normal. Well-trained athletes often have resting rates in the 40s or 50s because their hearts pump more blood per beat, so fewer beats are needed. Children’s hearts beat faster: a newborn’s resting rate can reach 205 bpm, a toddler’s ranges from 98 to 140, and school-age children typically fall between 75 and 118 bpm. By adolescence, the range settles into the adult norm of 60 to 100.
A lower resting heart rate generally signals better cardiovascular fitness. If you start exercising regularly, you may notice your resting rate drop over weeks or months as your heart becomes more efficient.
What Affects Your Reading
Your heart rate fluctuates throughout the day, so a single reading is just a snapshot. Several things can temporarily push your number up or down:
- Caffeine triggers the release of stress hormones that can raise your heart rate and blood pressure. People who are sensitive to caffeine or prone to irregular rhythms may notice a bigger spike.
- Stress and anxiety activate your body’s fight-or-flight response, which speeds up your heart even when you’re sitting still.
- Dehydration reduces blood volume, forcing your heart to beat faster to circulate the same amount of oxygen.
- Temperature plays a role too. Heat causes blood vessels to expand, and your heart compensates by beating faster.
- Medications like decongestants and some asthma treatments can raise your heart rate, while blood pressure medications often lower it.
For the most consistent measurement, check your pulse first thing in the morning before getting out of bed, before coffee, and after a night of reasonable sleep. This gives you a true resting baseline you can track over time.
Estimating Your Maximum Heart Rate
Your maximum heart rate is the fastest your heart can safely beat during all-out exercise. The classic formula is 220 minus your age, but this can underestimate the true max by as much as 40 bpm in older adults. A more accurate formula, developed from testing over 3,300 healthy adults aged 19 to 89 at the Norwegian University of Science and Technology, is 211 minus 0.64 times your age. For a 40-year-old, that works out to about 185 bpm instead of the 180 the old formula gives.
Knowing your estimated max helps you gauge exercise intensity. Light activity sits around 50 to 60% of your max, moderate exercise around 60 to 70%, and vigorous effort pushes above 70%. If you’re 40, moderate exercise would mean keeping your heart rate roughly between 111 and 130 bpm.
Signs Your Heart Rate Needs Attention
A resting heart rate consistently below 60 bpm is called bradycardia. For athletes, this is perfectly normal. For everyone else, it may not cause any problems, but if it comes with dizziness, fatigue, or fainting, it’s worth a medical evaluation. On the other end, a resting rate persistently above 100 bpm (tachycardia) can signal dehydration, anemia, thyroid issues, or other conditions that deserve a closer look.
Pay more attention to symptoms than to the number itself. A heart rate of 55 bpm with no symptoms in a healthy person is very different from 55 bpm with lightheadedness and shortness of breath. Irregular rhythms, where the beats feel uneven or seem to skip, are also worth noting and tracking, especially if they happen frequently or come with chest discomfort.