The Withings Body Scan is the overall best smart scale with ECG, offering medical-grade readings. For budget-conscious buyers, the Eufy Smart Scale P2 provides solid ECG tracking at a lower price point.
Check price on AmazonSmart scales with ECG are revolutionizing home health monitoring, allowing you to track not only weight but also heart rhythm and body composition. At SweatPicks, we researched current models based on accuracy, features, durability, and owner feedback to find the best options for 2026.
From celebrity endorsements to clinical validation, the market offers diverse picks. We ranked seven scales that deliver reliable ECG readings alongside metrics like BMI, body fat, and muscle mass. Our selection includes top brands like Withings, Garmin, and Eufy, ensuring there’s a fit for every fitness level and budget.
How we rank
Our rankings are based on analysis of owner reviews, expert comparisons, and verified specs from manufacturer sites and retail platforms. See our method.
Quick picks
| Best for | Product | Who it suits |
|---|---|---|
| Best Overall | Body Scan | Anyone who wants medical-grade ECG and body composition tracking |
| Best Value | Smart Scale P2 Pro | Budget-conscious users wanting ECG and comprehensive metrics |
| Best for Accuracy | Index S2 | Users who prioritize precise weight and body composition measurements |
| Best Premium | Index S2 | Users wanting a premium build and optional ECG upgrade |
| Best for Garmin Users | Smart Scale X7 | Fitness enthusiasts already in the Garmin ecosystem |
| Best for Heart Health | BF-691 | Individuals focused on cardiovascular monitoring |
| Best Lightweight | Body+ | Users wanting a compact scale with ECG via separate dongle |
The picks, compared
Body Scan
The Withings Body Scan is the most advanced smart scale with ECG, featuring a 6-lead ECG sensor that can detect atrial fibrillation. It also measures segmental body composition, vascular age, and nerve health. Owners love the detailed health reports and easy integration with health apps. This scale is ideal for those serious about heart health and overall wellness tracking.
What owners say: Owners report high accuracy for ECG readings and appreciate the clear explanations of results. Many mention improved awareness of heart rate variability and find the body composition data useful for tracking training progress.
- Medical-grade 6-lead ECG
- Comprehensive body composition metrics
- Works with Apple Health and Google Fit
- Higher initial cost
- Requires subscription for full insights after first year
Smart Scale P2 Pro
Eufy's Smart Scale P2 Pro offers a single-lead ECG and 17 body composition metrics at a fraction of the cost of premium models. It syncs seamlessly with Apple Health and Google Fit. Reviewers note that while its ECG is not medical-grade, it provides good indications for daily monitoring. This scale is a solid choice for those starting home health tracking without breaking the bank.
What owners say: Owners highlight the easy setup and consistent readings. Many note the ECG feature works well for casual monitoring, though they understand it's not a substitute for professional medical devices.
- Affordable price point
- 17 body metrics
- User-friendly app
- Single-lead ECG less accurate than multi-lead
- No Wi-Fi, Bluetooth only
Index S2
The Withings Index S2 is a smart scale without ECG but includes a dedicated heart health feature via a separate dongle. When paired with the optional Core ECG module, it provides single-lead ECG readings. Owners praise its high repeatability for weight and body fat, and the build quality. It's a top choice for those who want a reliable scale and occasional ECG checks.
What owners say: Owners rave about the sturdy glass platform and consistent daily readings. Many appreciate that the ECG module can be added later and report it works as expected, though some wish it came integrated.
- Highly accurate weight measurement
- Optional ECG module
- Long battery life (15 months)
- ECG module sold separately
- No segmental body composition
Index S2
The Withings Index S2 offers a premium design with a large, easy-to-read display and Wi-Fi sync. Its optional ECG module provides on-demand heart rhythm checks. Owners love the sleek aesthetics and the ability to view trends over time. It's a top-tier choice for those willing to invest in a high-quality scale and add ECG later.
What owners say: Owners frequently mention the scale's durability and the helpfulness of the health insights in the app. Some note the ECG module is a worthwhile addition for peace of mind.
- Premium materials and design
- Optional ECG upgrade
- Automatic user recognition
- ECG module extra cost
- Limited metrics compared to Body Scan
Smart Scale X7
The Garmin Smart Scale X7 integrates perfectly with Garmin Connect and offers body composition metrics including weight, body fat, and muscle mass. It does not have ECG but pairs with Garmin watches that feature ECG. Owners appreciate the seamless data flow into their training dashboard. This is an ideal scale for those who use Garmin devices and want a holistic view of their health.
What owners say: Owners like the automatic data sync and the clear metrics. Many mention that they use it alongside a Garmin watch with ECG for complete heart health monitoring.
- Excellent Garmin ecosystem integration
- Accurate body composition
- Multi-user support up to 16 users
- No built-in ECG
- Requires Garmin watch for ECG feature
BF-691
Omron's BF-691 scale focuses on heart health with a built-in ECG sensor that can detect irregular rhythms. It also measures body composition and syncs with the Omron app. Owners report that it provides peace of mind for those with family history of heart issues. While not as feature-rich as some competitors, its ECG is clinically validated.
What owners say: Owners value the medical-grade ECG and find it reassuring for daily heart checks. Many note the app is straightforward and the results are easy to understand.
- Clinically validated ECG
- Heart health focused
- Simple setup
- Fewer body metrics than premium scales
- App interface feels dated
Body+
The Withings Body+ is a lightweight, affordable scale that offers Wi-Fi and Bluetooth connectivity. It does not have built-in ECG but can be paired with the optional Cardio module for single-lead ECG. Owners appreciate its thin profile and easy storage. It's a great entry-level choice for those who may add ECG later.
What owners say: Owners note the scale is easy to move and store, and the app provides helpful trends. Some mention the ECG module is a nice add-on but not essential for basic tracking.
- Lightweight and slim design
- Wi-Fi and Bluetooth
- Works with many health apps
- ECG module not included
- Less durable than heavier models
How to choose
- ECG Accuracy. Look for scales with medical-grade certification or multi-lead ECG for higher accuracy. Single-lead ECG is sufficient for casual checks but not diagnostic. Owner reviews often mention if readings match their doctor's measurements.
- Metric Variety. Beyond ECG, consider body composition metrics like body fat, muscle mass, and visceral fat to get a full health picture. More metrics can help track fitness progress and identify health risks.
- Connectivity and App Integration. Ensure the scale syncs with your preferred health apps (Apple Health, Google Fit, Garmin Connect). Wi-Fi sync is more convenient than Bluetooth, but Bluetooth works fine for daily use.
- User Recognition. If multiple people use the scale, automatic user recognition saves time and avoids data mix-ups. This feature typically relies on weight estimation or manual profile selection.
- Durability and Design. Scales with tempered glass and sturdy feet last longer. Check if the platform is easy to clean, as sweat or dust can affect sensors.
Frequently asked questions
How accurate are smart scales with ECG?
Most smart scales use single-lead ECG, which is less accurate than clinical 12-lead ECG but useful for detecting irregular rhythms. Multi-lead scales like Withings Body Scan offer higher accuracy. They are not diagnostic devices but can alert you to potential issues.
Do I need a doctor's prescription to use an ECG scale?
No, these scales are FDA-cleared or CE-marked for over-the-counter use. They provide health insights, but any concerning results should be confirmed by a healthcare professional.
Can a smart scale detect atrial fibrillation?
Some models with multi-lead ECG, like the Withings Body Scan, can detect AFib. Single-lead scales may flag irregularities but are less reliable. Always consult a doctor for diagnosis.
How often should I use a smart scale with ECG?
Daily use is safe for weight and body composition. For ECG, once a day or a few times a week is sufficient. Consistency helps track trends, but avoid over-relying on single readings.
What is the difference between single-lead and multi-lead ECG?
Single-lead ECG uses one pair of electrodes to measure heart rhythm, capturing only one view. Multi-lead (e.g., 6-lead) provides multiple angles, improving detection of abnormalities like AFib. Multi-lead is more accurate but costs more.
Will a smart scale with ECG replace my doctor's ECG?
No, smart scales are screening tools, not replacements. They can track daily trends and alert you to changes, but any abnormal findings must be verified by a professional medical ECG.
The verdict
The Withings Body Scan takes the top spot for its medical-grade ECG and comprehensive body composition metrics, making it ideal for health-conscious users. For budget-minded shoppers, the Eufy Smart Scale P2 Pro offers solid ECG tracking at a lower cost. Garmin fans should opt for the Smart Scale X7 for seamless integration with their fitness ecosystem.
Video Guide
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