The Fitbit Sense gives you an easy way to check your heart rhythm with an on-wrist ECG scan. Many users run into setup problems, region restrictions, or inconclusive readings, so this guide walks you through every step and shows how to get clean results.
But before getting started, you will need a working Fitbit Sense, the latest Fitbit app, and updated firmware. A quick compatibility check ensures the ECG tile appears where it should. Also, note that Fitbit activates ECG only in approved countries due to regulatory rules.
Step 1: Install the ECG app on the Fitbit Sense
Open the Fitbit app and scroll until you see the ECG tile. Next, tap Set Up and follow the onscreen instructions.
Step 2: Set up the ECG feature
The app walks you through onboarding screens that explain the feature. You grant permissions so the watch can record and store your readings.
Your watch may also ask you to confirm wrist placement and band tightness. Complete this once to keep readings accurate.
Step 3: Take an ECG reading on Fitbit Sense
Wake the Sense and swipe to ECG. Sit still with your arm resting on a table and place your fingers on the metal frame. Lastly, hold still until the timer finishes.

Note that you get cleaner signals when you keep your hands warm, tighten the band slightly, and rest your arm on a solid surface. Small adjustments fix most inconclusive scans.
Tip: Each scan takes about 30 seconds. Avoid moving, talking, or lifting your arm during that time.
Step 4: Understanding your ECG results

You usually see three result types.
- Normal Sinus Rhythm: Your heart beats in a normal pattern.
- Atrial Fibrillation: The app detects an irregular rhythm; you should discuss with a clinician.
- Inconclusive: The sensor could not read a stable signal.
Tip: The Sense blocks ECG readings when your heart rate goes too high or too low. This keeps readings accurate and prevents false data.
How to view past ECG readings
Open the Fitbit app and tap the Discover tab. Next, select Heart Rhythm Assessment (ECG) and review your historical entries.
To export your ECG readings as a clean PDF to your doctor for review, open the ECG history and tap a specific reading. Now, tap Export PDF and save it or send it using your phone’s share options.
Safety notes and usage limitations
ECG on Fitbit Sense does not detect heart attacks and does not replace medical evaluation. Use it for rhythm checks, not emergency diagnostics.
Troubleshooting common ECG problems
- ECG not showing on the watch: Confirm your region supports ECG, update both the watch and app, and restart the Sense. Permissions in the Fitbit app often fix missing tiles.
- ECG failing mid-scan: Sit still, warm your hands, and tighten the band slightly. Avoid resting your fingers on both sides of the frame at once unless the app prompts you.
Tips for Sense ECG usage
- Keep your hands warm before starting a scan.
- Clean the watch sensors regularly.
- Tighten the band slightly when running the ECG.
- Sit at a table and rest your arm.
- Wait a few minutes after an activity.
- Turn off unnecessary apps and notifications temporarily.
FAQs about Sense ECG usage
How often should I run an ECG? You run it whenever you feel symptoms or want a periodic check.
Does exercise affect ECG? Yes. Wait a few minutes after activity to stabilize your heart rate.
Is the Fitbit ECG accurate? It matches clinical-grade ECG detection for rhythm irregularities but does not replace a full medical ECG.
Can dry skin cause a failed scan? Yes. Moisturizing lightly or warming your hands usually improves readings.
Summary
- Update your Fitbit Sense and Fitbit app before enabling ECG.
- Install ECG from the tile inside the Fitbit app.
- Use correct hand placement and posture for clean readings.
- Interpret Normal, AFib, or Inconclusive results with confidence.
- Export past readings as PDFs for medical review.
- Fix common issues by adjusting band fit, warming hands, or updating software.
Conclusion
Fitbit Sense gives you dependable heart rhythm checks when you configure the ECG feature correctly. You avoid most setup and reading issues by updating the watch, adjusting band fit, and following a stable scanning posture. Once you understand the results and export options, the device helps you track irregular rhythms and share clean data with your clinician whenever needed.

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