How to Show Your Smartwatch Heart Data to Your Doctor (And What to Say)
So you’ve been wearing that smartwatch for months. It’s tracked your resting heart rate at 2 a.m., flagged a possible irregular rhythm on a Tuesday in March, and recorded twelve ECG readings you’ve never really looked at.
But there’s a good chance you’ve never brought any of it to your cardiologist and you are not alone!
A national survey of over 1,000 Americans conducted in December 2024 found that while nearly two-thirds regularly use a device to monitor their heart health, only 1 in 4 ever use that data to start a conversation with their doctor. 1
That’s a lot of wasted signal.
Here’s the thing: your cardiologist sees you for maybe 15 minutes. They get one blood pressure reading, one EKG strip, one snapshot. Your watch has been watching 24 hours a day. That data gap matters — and closing it doesn’t require anything technical. Just some prep.
This guide will walk you through exactly what to bring, how to get it off your device, and what to say when you sit down.
Why Doctors Are Starting to Pay Attention
This isn’t about convincing a skeptic. The American College of Cardiology published formal guidance in May 2025 specifically on how clinicians should incorporate Apple Watch heart data into cardiovascular care. 2 That’s the ACC — not a tech blog. They laid out workflows, best practices, and patient handouts.
A study published the same month in JACC: Advances found that the main barriers keeping doctors from using smartwatch data weren’t doubts about the technology — they were time constraints and lack of a clear process for reviewing it. 3
Which means the burden is partly on you to make it easy. Not to overwhelm them with 6 months of minute-by-minute readings. To show up with the right data, organized, with context.
What Your Cardiologist Actually Wants to See
Not everything. That’s the first thing to understand.
Your watch collects a firehose of numbers. Most of it isn’t clinically meaningful on its own. What cardiologists actually find useful, based on what they say in practice:
1. Irregular rhythm alerts — especially if you felt something
If your watch flagged a possible irregular rhythm and you were also short of breath, dizzy, or your heart felt like it was “fluttering” — that combination is worth discussing. The alert alone, without symptoms, is lower priority. Together, it tells a story.
2. ECG strips from moments you noticed something
A single ECG taken during a symptom episode is far more informative than a dozen taken at random. If your watch recorded an ECG when you felt off, that’s the one to bring.
3. Resting heart rate trends over time
Not the number from yesterday. The trend over the past 30 to 90 days. A gradual rise in resting heart rate, or a sudden drop after starting a new medication — that kind of pattern is exactly what a brief office visit can’t capture.
4. AFib history (if your watch tracks it)
Apple Watch Series 4 and later can track AFib burden over time — the percentage of time your heart was in AFib over the past week. If you have a known diagnosis, this is genuinely useful data for your cardiologist to see alongside whatever their monitoring shows. 4
What you don’t need to bring: every step count, your sleep score, your stress level reading. Leave that at home.
How to Get the Data Off Your Device
Apple Watch*
The easiest export is the ECG PDF. Here’s how:
- On your iPhone, open the Health app
- Tap Browse → Heart → Electrocardiograms (ECG)
- Tap any reading you want to share
- Select Export a PDF for Your Doctor
- Share via email, print, or save to your files 5
For resting heart rate trends, take a screenshot of the 3-month view in the Heart Rate section of the Health app. It’s a clean graph — doctors can read it at a glance.
If your doctor’s practice uses Epic or another major health system, you may also be able to share data directly from the Health app. Go to Sharing → Share with Provider, search for your provider, and connect your account. 5
Garmin*
Garmin Connect doesn’t have a one-tap “export for doctor” button. But the web dashboard at connect.garmin.com shows clear heart rate graphs you can screenshot or print. For a longer view, use the Reports section — you can see resting heart rate trends by week or month. 6
If you need to export raw data, go to the Activity in Garmin Connect, click the gear icon, and select Export to TCX or GPX. Fair warning: this produces a data file, not a readable report. For most cardiology appointments, a clean screenshot of the trend graph is more useful than a spreadsheet.
Fitbit (Google Pixel Watch)*
In the Fitbit app, your heart rate history is visible under Today → Heart Rate. Screenshot the trend view you want to share — the 30-day view works well for appointments.
For a full data export (if your doctor requests it), go to fitbit.com/settings, find Data Export, and request your archive. 7 It takes time to generate and produces a lot of files — again, for most appointments, a screenshot of the relevant trend window is cleaner.
* Devices get upgrades, apps get updated, please always check with the respective smartwatch producer for updated information!
What to Actually Say in your Doctor Appointment
This is where most people get stuck. You don’t want to spend the whole appointment explaining how your watch works. And you don’t want the doctor to feel like you’re challenging them.
A few phrases that actually work:
If you had an alert: “I got an irregular rhythm notification on [date]. I also felt [symptom] around that time. I pulled the ECG — can I show you what it recorded?”
If you’ve seen a trend: “My resting heart rate has been trending up over the last couple months. I know it might mean nothing, but I wanted to flag it — here’s the graph.”
If you want a broader conversation: “I’ve been tracking my heart rate data for a while. I wasn’t sure what was worth bringing up, but is there anything in here you’d want to look at given my history?”
Short, specific, non-confrontational. You’re not diagnosing yourself — you’re offering more information. That’s a different posture, and most cardiologists respond well to it.
A Few Things for you to Keep in Mind
Your watch is a wellness device, not a medical one. Even the Apple Watch ECG — which is FDA-cleared — is a single-lead recording, not a 12-lead clinical EKG. It can alert you to potential irregularities. It can’t diagnose you.
We’ve covered the accuracy question in more detail here: Apple Watch EKG: How Accurate Is It Really?
And if your watch has ever flagged something that looked like AFib, this is worth reading before your appointment: Silent AFib: Can a Wearable Catch What You Can’t Feel?
The ACC guidance makes this clear: Apple Watch is appropriate for general wellness monitoring and for patients managing known arrhythmias. It’s not a substitute for clinical monitoring where immediate alerts to a clinician are required. 2
That’s not a knock on the technology. It’s just an honest picture of what it is.
The Bottom Line
You’re walking around with a device that’s been quietly collecting months of heart data. Your cardiologist has 15 minutes.
Bring the ECG PDF for any reading that coincided with a symptom. Bring a screenshot of your resting heart rate trend. Know the date of any irregular rhythm alert. That’s it. You don’t need to become a data analyst — you just need to show up with the right three things.
Doctors aren’t dismissing wearable data the way they used to. The ACC has formal guidance on it. Studies are validating it. The gap now is mostly on the patient side — people collecting data and never surfacing it.
That gap is easy to close.
Frequently Asked Questions
Q: Should I show my smartwatch data to my cardiologist?
Yes — especially ECG strips, irregular rhythm alerts, and resting heart rate trends. These can provide context a brief office visit can’t. Don’t wait to be asked. Print the PDF or pull it up on your phone and bring it to your appointment.
Q: How do I export my Apple Watch ECG for my doctor?
Open the Health app on your iPhone. Tap Browse, then Heart, then Electrocardiograms (ECG). Tap any reading and select Export a PDF for Your Doctor. You can share it by email, AirDrop, or print it directly.
Q: Can I share Apple Watch data directly with my doctor’s office?
Yes, if your doctor’s health system supports Apple Health data sharing. In the Health app, go to Sharing → Share with Provider, and search for your provider. This works with many Epic-based hospital systems in the US.
Q: What smartwatch data do cardiologists actually find useful?
Irregular rhythm alerts tied to symptoms, ECG strips from moments you felt something, resting heart rate trends over 30–90 days, and AFib history summaries if you have a known diagnosis. Raw minute-by-minute data is far less useful than a clear trend with context.
Q: What if my doctor dismisses my smartwatch data?
Some doctors are still skeptical of consumer wearables — that’s changing, but it’s fair. If you’re dismissed, ask specifically: “I had an irregular rhythm alert on [date] and felt [symptom] — can we look at whether that warrants follow-up?” Tying data to a concrete symptom is harder to wave off.
This article is for informational purposes only and is not a substitute for professional medical advice. Always consult your healthcare provider about any heart health concerns, symptoms, or data from wearable devices.
References
- Ohio State Wexner Medical Center. “Survey: While most Americans use a device to monitor their heart, few share that data with their doctor.” January 2025. https://wexnermedical.osu.edu/mediaroom/pressreleaselisting/heart-devices-mmr
- American College of Cardiology. “ACC Issues New Tool to Provide Guidance on Using Apple Watch For Heart Health Monitoring.” May 2025. https://www.acc.org/Latest-in-Cardiology/Articles/2025/05/20/18/05/ACC-Issues-New-Tool-to-Provide-Guidance-on-Using-Apple-Watch-For-Heart-Health-Monitoring 2
- Shroff S, Draper E, Massoomi M, et al. “Physician Attitudes on the Use of Smartwatch Cardiovascular Data in Patient Care.” JACC: Advances. May 2025. https://pubmed.ncbi.nlm.nih.gov/40570405/
- American College of Cardiology. “Leveraging Apple Watch for Cardiovascular Care” (ACC Apple Tool). https://www.acc.org/About-ACC/Innovation/Apple-Tool
- Apple Support. “Share your data in Health on iPhone.” https://support.apple.com/guide/iphone/share-your-health-data-iph5ede58c3d/ios 2
- Garmin Customer Support. “How Do I Export Data Out of Garmin Connect?” https://support.garmin.com/en-US/?faq=W1TvTPW8JZ6LfJSfK512Q8
- Google / Fitbit Help Center. “How do I export my Fitbit data?” https://support.google.com/fitbit/answer/14236615
