How does Samsung health measure heart rate?


Author bio

Page last updated: 30/09/2022

How does Samsung health measure heart rate?

In this guide, we will discuss “How does Samsung health measure heart rate, can this measurement tell me something important about my health? Also, we will discuss how accurate (or inaccurate) it could be, what are some of the factors that can interfere with the readings and some additional considerations if you are thinking about using a device or wearable.

How does Samsung health measure heart rate?

You may be wondering ‘How does Samsung health measure heart rate?’ well, the heart rate sensor measures your bpm or beats per minute, using an optical LED light source and a LED light sensor. But how does it work? The light shines through your skin, and the sensor is built to measure the amount of light that reflects back. Finally, the light reflected will vary as blood pulses under your skin past the light and the variations in the light reflected, are interpreted as heartbeats.

However, it is important to know that when the device is synced with a compatible Samsung Health app, it can be used to estimate measurements such as heart rate and calories burned. Moreover, there are many more features to discover within the Samsung Health app, such as counting your steps or recording your exercises.

Can this measurement tell me something important?

Our heart can be considered one of the most important organs in our body and knowing or monitoring our heart rate can be useful to help us detect any sudden changes or anomalies but we shouldn’t just consider this measurement but also visit a physician. Doctors don’t normally recommend that people keep tracking their heart rates even if heart rate monitors can be a great tool, consult with them before you start any exercise regimen.

As recommended on, “If you have an implantable medical device, such as a pacemaker, please consult your doctor or health care provider before using any handheld or wearable wireless mobile device and carefully review the health and safety manual for your device model for tips on preventing interference. For additional information”.

How accurate is it?

Just like with any other device, the accuracy will depend on several factors such as issues with the software, environmental conditions, skin condition, specific activity performed while using the device, settings of the device and/or user configuration. Moreover, it is recommended to read the manual for more information on how to use the device properly.

However, before you start monitoring your heart rate with any device or wearable and before you start any physical activity, especially if you have a medical or heart condition, consider discussing it with a professional so they can assess your health and can help you create an exercise program fit for you.

As advised by Samsung, “While the heart rate sensor on your device can be a useful tool for motivating you and tracking your exercise intensity, the heart rate sensor and compatible Samsung Health application are not medical devices and are not intended to diagnose, treat or prevent a disease or medical condition”.

What do the different statuses mean?

If you are going to measure your heart rate using the sensor, select the status depending on your level of activity when measuring. Additionally, the general status is best measured when you are not resting, meaning not laying in bed or your couch but also avoid measuring when working out. 

The before exercise status is best measured after warming up or stretching before a workout. Also, you can see the resting status which is best measured when you wake up or after you have been sitting still for at least 5 minutes. Finally, the after exercise status is best measured directly after working out.

How does Samsung health measure heart rate?

How to measure my heart rate with my device or wearable?

When you are measuring your heart rate, ensure the device fits in your arm and wrist but without making you feel uncomfortable. Try not to fasten it too tightly and if it feels uncomfortable, becomes hot to the touch, remove until it cools down.

In contrast, when measuring your heart rate with your Samsung device, place your finger on the sensor and press it lightly. 

Additionally, if you have Galaxy Buds and you would like to measure your heart rate, make sure to check the direction of each earbud and insert them into your ears facing upwards until they sit comfortably in your ears. Adjust the earbuds by rotating them to the left or right, so it can fit your ears. The heart rate sensor will automatically detect them once inserted and they will automatically turn on and emit a beep sound. 

Recommendations for better results when measuring your heart rate

  • If your device is brand new, make sure no plastic or stickers are covering the heart rate sensor since it may not display an accurate reading.
  • Try to take the measurements when you are seated and relaxed. Avoid moving while it takes the measurements since it can record your heart rate inaccurately.
  • If the measurement you see is very different from the expected heart rate measurement, rest up to 30 minutes and measure again. 
  • Users with thin wrists may get inaccurate readings.
  • The measurements are calculated using average values and you may need to take them a couple of times before you get an accurate reading.
  • Avoid taking measurements when drinking or smoking since it can cause your heart rate to be different from your normal heart rate.
  • Avoid looking directly into the heart sensor’s light since doing so may impair your vision.
  • If the sensor is nor working properly, try adjusting the position on your wrist for better reading.
  • If the sensor becomes dirty, try wiping it and try again.
  • If you have an implantable medical device (i.e. peacemaker) keep your mobile device more than 6 inches from your implantable device when the phone is on. Also, avoid carrying the device in your breast or the front pocket of your shirt. 

Why is this blog about How does Samsung health measure heart rate important?

Knowing how does S Samsung health measures heart rate may seem very important for a lot of people, not only for those who need it but also for those who try to monitor their physical activity. As we have seen, both the phone and wearables have heart rate sensors that will help measure your heart rate. However, consider that there are several factors that may give you an inaccurate reading. 

Also, remember that the Samsung Health app and devices are nor intended to diagnose, help treat or prevent any diseases or medical conditions so the results should be interpreted carefully. 

Please feel free to leave any comments or thoughts about the content of this article!

Frequently Asked Questions (FAQs) about How does Samsung health measure heart rate

Is Samsung health heart rate accurate?

Samsung health heart rate is believed to be accurate. A study showed the accuracy of wearables at detecting baseline heart rate within five bpm was 100%, 100% and 94% for Apple, Samsung and Fitbit, respectively. Heart rate during PSVT ranged from 108 bpm to 228 bpm.  The Apple Watch showed the highest accuracy and Galaxy was comparable. 

How does Samsung measure heart rate?

Samsung measures heart rate if you open the Samsung Health app, select Heart Rate from the home screen and place your finger on the sensor below the camera on the back of your phone. Hold your finger and stay still for around 10 seconds, tap the chart’s symbol at the bottom right of the screen. 

How does Samsung health measure stress?

Samsung Health measures stress using the heart rate sensor on the back of your phone. For instance, the S5 will calculate a measure of stress from low to high and even if it may seem far fetched to some people, the phone is actually using a measure of your heart rate to calculate something called ‘heart rate variability’ or HRV.

Can the Samsung s20 measure heart rate?

The Samsung S20 does have a Samsung’s heart rate sensor, a feature that’s been with the S series for a long time. If you don’t have a wearable such as a band or a smartwatch with this feature and you are planning on getting a phone to check your pulse, you can do so with the S10 and S10+.

Can Samsung Watch detect irregular heartbeat?

The Samsung Galaxy Watch 3 and Watch Active 2 have an ECG monitor where the app on both wearables can monitor heart rhythms and spot irregularities and signs of atrial fibrillation or AFib, which is a type of irregular heartbeat.