Apple Watch User Guide
- Welcome
- What’s new in watchOS 27
- Apple Watch For Your Kids
- Run with Apple Watch
-
- Important safety information
- Important handling information
- Find more resources for software and service
- Unauthorized modification of watchOS
- Band care information
- FCC compliance statement
- ISED Canada compliance statement
- Ultra Wideband information
- Disposal and recycling information
- Apple and the environment
- Copyright and trademarks
Record an electrocardiogram with the ECG app on Apple Watch
Apple Watch has an electrical heart rate sensor that, along with the ECG app, allows you to take an electrocardiogram (or ECG). To use the ECG app, update your iPhone 11 or later or iPhone SE (2nd generation or later) to the latest version of iOS and Apple Watch to the latest version of watchOS.
Note: The ECG app isn’t available on Apple Watch SE 3 or in all countries or regions.
Go to the Health app
on your iPhone, then follow the onscreen steps to set up ECG.
If you don’t see a prompt to set up, tap Browse at the bottom-right, tap Heart, then tap Electrocardiogram (ECG).
Go to the ECG app
on your Apple Watch.
Rest your arm on a table or in your lap.
With the hand opposite your watch, hold your finger on the Digital Crown, then wait while Apple Watch records the ECG.
You don’t need to press the Digital Crown during the session.
At the end of the recording, you receive a classification. You can then tap Add Symptoms and choose your symptoms. Tap Save to note any symptoms, then tap Done. To view your results on iPhone, go to the Health app on iPhone, tap Browse at the bottom-right, tap Heart, then tap Electrocardiograms (ECG).
Important: To ensure the best reading after swimming, showering, heavy perspiration, or washing your hands, clean and dry your Apple Watch. It may take 1 hour or more for Apple Watch to completely dry. ECG is designed to function between 32 and 95 °F (0 and 35 °C).
For more information about the ECG app, see the Apple Support article Take an ECG with the ECG app on Apple Watch, and the document Electrocardiogram (ECG) App Instructions for Use (IFU).