What is the Google ECG app?

The electrical sensors on your compatible wrist-worn product detect your heart rhythm. When you use the Google ECG app, your heart rhythm data is analyzed for signs of AFib. Only a doctor can diagnose AFib, but the results of the assessment can let you know if your heart rhythm has signs of the condition.

With AFib, your heart may not always beat irregularly, making it hard to detect even in the doctor’s office. While this assessment can’t diagnose AFib, you can use it right from your wrist. Your results can help you have a better conversation with your doctor.

Certain compatible wrist-worn products have electrical sensors. Your Fitbit Charge 6, Fitbit Charge 5, Fitbit Sense 2, and Fitbit Sense have them on the metal frame around the face. For the Google Pixel Watch series, the sensor is on the crown (the dial on the outside) and on the back. 

When these sensors are in contact with your skin and the Google ECG app is open, they record the electrical signals from your heartbeat. 

The Google ECG app is qualitatively similar to a Lead I ECG in that it can be used to discriminate between AFib and normal sinus rhythm. However, it can’t detect all heart conditions. In a doctor’s office, a 12-lead ECG is typically used, which provides electrical information about the heart from 12 different angles.

The Google ECG app is available on Fitbit Sense 2, Fitbit Sense, Fitbit Charge 6 and Fitbit Charge 5 in the following countries:

American Samoa ᐧ Australia ᐧ Austria ᐧ Belgium ᐧ Canada ᐧ Chile ᐧ Czech Republic ᐧ France ᐧ Germany ᐧ Guam ᐧ Hong Kong ᐧ India ᐧ Ireland ᐧ Italy ᐧ Luxembourg ᐧ Netherlands ᐧ New Zealand ᐧ Norway ᐧ Poland ᐧ Portugal ᐧ Puerto Rico ᐧ Romania ᐧ Singapore ᐧ South Africa ᐧ Spain ᐧ Sweden ᐧ Switzerland ᐧ Taiwan (excluding Fitbit Sense and Fitbit Charge 5) ᐧ United Kingdom ᐧ United States ᐧ U.S. Virgin Islands

The Google ECG app is available on Google Pixel Watch, Google Pixel Watch 2, Google Pixel Watch 3, and Google Pixel Watch 4 in the following countries:

Australia ᐧ Austria ᐧ Belgium ᐧ Canada ᐧ Czech Republic ᐧ France ᐧ Germany ᐧ India ᐧ Ireland ᐧ Italy ᐧ Japan (excluding Google Pixel Watch) ᐧ Netherlands ᐧ New Zealand ᐧ Norway ᐧ Poland ᐧ Portugal ᐧ Puerto Rico ᐧ Romania ᐧ Singapore ᐧ Spain ᐧ Sweden ᐧ Switzerland ᐧ Taiwan ᐧ United Kingdom ᐧ United States

You can find the Google ECG app on your compatible wrist-worn product by: 

• Swiping left on the screen (Charge 5, Charge 6, and Sense)
• Pressing the button (Sense 2)
• Pressing the crown (Google Pixel Watch series). 

Past results can be found in the Google Health app  on the Health tab .

If you don’t have the Google ECG app installed, refer to How do I install the Google ECG app?

The Google ECG app is only available in select locations at this time. If you’re not in a supported location, you’ll get an error message that the feature isn’t supported in your location.

Additional countries will be added as regulatory clearance is obtained.

Before you take your first reading:

1. Open the Google Health app   tap the Health tab .
2. Under "Health checks", tap ECG.
3. Tap Get started and follow the instructions. After you complete setting up the feature, you can take an ECG reading on your device.

To take an ECG reading:

1. Wear your compatible wrist-worn product snugly, but with enough room for comfort. It should sit a finger’s width above your wrist bone. The back of the compatible wrist-worn product should rest securely against your skin. For more information, refer to How do I wear my Fitbit device?.
2. Sit down and open the ECG app on your compatible wrist-worn product. Note that after you tap the ECG app, it can take several seconds for the app to load. During this time, the product displays a black screen. When you start an ECG reading, if Do Not Disturb (DND) mode is off, we automatically turn on DND in order to ensure you receive a reading. You can turn it back off after the ECG is complete.
3. Follow the instructions on your compatible wrist-worn product to start the assessment.
4. Put your finger(s) on your compatible wrist-worn product as shown on the screen. Sit still while the test is in progress with your feet on the floor and forearms and wrists resting on a solid surface in front of you. Remain calm and relaxed, breathing regularly Continue to hold the contact point(s) until the countdown is complete. Avoid touching other parts of the Fitbit wrist-worn product or your wrist.
5. When your results appear, swipe up to check the full report. Note that Google Pixel Watch series must be connected to LTE or Wi-Fi to sync your ECG data to the Google Health app .

After you complete the Heart Rhythm Assessment, you get one of the following results:

There are 3 types of inconclusive results you might receive after taking the assessment:

Inconclusive: High heart rate

If your heart rate is over 120 bpm, the Google ECG app can’t assess your heart rhythm. Heart rate can be high for many reasons, such as:

• Recent exercise
• Stress
• Nervousness
• Alcohol
• Dehydration
• Infection
• AFib, or other arrhythmia

Learn more from the American Heart Association or visit the website of the European Society of Cardiology [https://www.escardio.org/].

Inconclusive: Low heart rate

If your heart rate is under 50 bpm, the Google ECG app can’t assess your heart rhythm. Heart rate can be low for many reasons, such as:

• Taking certain medications such as beta-blockers or calcium channel blockers
• Having excellent aerobic fitness
• Other arrhythmia

Learn more from the American Heart Association or visit the website of the European Society of Cardiology [https://www.escardio.org/].

Inconclusive: Didn't get a good reading

There are many possible reasons for getting an inconclusive result, but common causes are:

• Moving too much during the reading
• Not resting your hands on a table
• Wearing your device too loosely
• Uneven or strenuous breathing
• Wearing your device on a wrist other than the one you specified
• Being near electronics since this can interfere with the reading

If the Google ECG app couldn’t get a good reading, try the following troubleshooting tips:

• Make sure you’re sitting down and relaxed.
• Rest your arms on a table while you take the assessment and avoid moving.
• Check that your compatible wrist-worn product is on the wrist you selected when you started the assessment. 
• Keep your finger(s) on your compatible wrist-worn product for the duration of the assessment. Avoid touching other parts of the Fitbit wrist-worn product or your other wrist.
• Check the fit of your compatible wrist-worn product. It should feel comfortably secure, not too loose or too tight. Wear it a finger’s width above your wrist bone. The back of the compatible wrist-worn product should rest securely against your skin. For more information, refer to How do I wear my Fitbit device?
• Ensure there is no interference with the electrode to skin contact (hair, jewelry, clothing, etc.)
• If you recently put on your compatible wrist-worn product, the electrodes might need to warm to your skin temperature. The electrodes are located on the side of the watch face for compatible wrist-worn products and on the bottom of the device for Google Pixel Watch series. Try retaking the assessment at a later time.
• Avoid taking the assessment after recent exercise because heavy breathing and elevated heart rate after exercise can make it challenging to obtain a good reading.
• Move away from other electronics to prevent interference.
• If you have dry skin, a small amount of lotion applied to your finger(s) and wrist can help the electrodes get a good reading.
• Make sure your compatible wrist-worn product and wrist are clean and dry. Water or sweat can interfere with the reading. If you recently washed your hands, went swimming, showered, or perspired, clean and dry your compatible wrist-worn product. Refer to Fitbit Product Care for wear and care instructions.

Retake the assessment to try again. If you get an inconclusive result repeatedly, or you’re not feeling well, talk to your healthcare provider.

When you open the Google Health app, your results transfer from your compatible wrist-worn product to the Google Health app. Your results can be viewed on your phone or tablet. To check your results at a later time, such as during an appointment with your healthcare provider:

1. Open the Google Health app   tap the Health tab .
2. Under "Health checks", tap ECG. Your most recent results are displayed with the date and time that they were taken. For additional results, tap Show more.
3. Tap any of the results to view more details. Note: If your compatible wrist-worn product wasn’t able to measure your heart rate, the ECG results might show dashes where your average heart rate normally appears. Follow the instructions in Inconclusive: Didn’t get a good reading to retake the assessment.
4. To download the report, tap Export PDF for your provider  Download PDF  name and save your report. We recommend using the latest version of Adobe Acrobat Reader to open the report. 

1. Open the Google Health app , tap the Health tab . Under "Health check", tap ECG. Your most recent results are displayed with the date and time that they were taken. For additional results, tap Show more.
2. Tap the result you want to delete. Swipe to the bottom of the page, and tap Delete result.

The Google ECG app is currently available on: 

• Fitbit Sense (running Fitbit OS 5.0+)
• Fitbit Sense 2
• Fitbit Charge 6
• Fitbit Charge 5
• Google Pixel Watch series (Google Pixel Watch, Google Pixel Watch 2, Google Pixel Watch 3, and Google Pixel Watch 4)

For instructions on how to export an individual result, refer to How do I save my Google ECG results or look at them again later?

The Google ECG app uses electrical sensors on the back of your compatible Fitbit wrist-worn product and on the metal frame around its face (Fitbit Charge 5, Fitbit Charge 6, Fitbit Sense, and Fitbit Sense 2) or crown and device back (Google Pixel Watch series) to allow you to record the electrical signals from your heartbeat during a 30-second reading.

The Google ECG app is qualitatively similar to a Lead I ECG in that it can be used to discriminate between AFib and normal sinus rhythm. The Google ECG app analyzes the recording and presents the results on your watch or tracker.

Google Irregular Rhythm Notifications collect pulse rate data in the background when you’re still or at rest by analyzing beat-to-beat measurements. It uses the optical pulse-rate sensor on your compatible wrist-worn product to identify heart rhythm changes. If multiple readings show an irregular pulse rate that may be AFib, you receive a notification. Data isn’t analyzed in real-time. For more information, refer to How do Google Irregular Rhythm Notifications check for atrial fibrillation (AFib)?

To better understand your results, explore the available accessibility options on the ECG app. Learn which accessibility features are available on your Fitbit service.