How to Calibrate Eufy Smart Scale

Calibrating your Eufy smart scale ensures accurate weight and body composition measurements. This guide walks you through the full process, from setup to troubleshooting, so you get reliable results every time.

Key Takeaways

• Calibration ensures accuracy: Proper calibration aligns your Eufy smart scale with your environment for precise weight and body data.
• Use a known weight: A calibrated dumbbell or calibration weight is essential for manual calibration.
• Place the scale on a hard, flat surface: Soft or uneven floors can cause inaccurate readings and calibration errors.
• Follow the app instructions: The EufySecurity app guides you through the calibration process step by step.
• Calibrate after moving the scale: Always recalibrate if you relocate the scale to a new floor or room.
• Keep the scale clean and dry: Dirt, moisture, or debris on the sensors can interfere with calibration.
• Regular checks improve reliability: Recalibrate every few months or if readings seem inconsistent.

How to Calibrate Eufy Smart Scale: A Complete Step-by-Step Guide

If you’ve recently bought a Eufy smart scale or noticed that your weight readings seem off, you’re not alone. Many users wonder, “How do I calibrate my Eufy smart scale?” The good news is that calibrating your Eufy smart scale is simple, quick, and essential for getting accurate results. Whether you’re tracking your weight, body fat, muscle mass, or BMI, proper calibration ensures your data is reliable and meaningful.

In this comprehensive guide, you’ll learn everything you need to know about calibrating your Eufy smart scale. We’ll cover why calibration matters, how to prepare your scale and environment, step-by-step calibration instructions, troubleshooting tips, and best practices to maintain accuracy over time. By the end, you’ll feel confident that your Eufy smart scale is working perfectly—so you can focus on your health goals without second-guessing your numbers.

Why Calibration Matters for Your Eufy Smart Scale

Before diving into the how-to, let’s talk about why calibration is so important. Your Eufy smart scale uses advanced bioelectrical impedance analysis (BIA) to measure not just your weight, but also body fat percentage, muscle mass, bone mass, water percentage, and more. These readings depend on precise electrical signals passing through your body—and that starts with an accurate baseline weight measurement.

If your scale isn’t calibrated correctly, even small errors can throw off all your body composition data. For example, a scale that reads 2 pounds light might show lower body fat or muscle mass than you actually have. Over time, this can mislead your progress tracking and make it harder to see real changes.

Calibration also accounts for environmental factors like floor type, temperature, and humidity. Eufy scales are designed to auto-calibrate in many situations, but manual calibration gives you extra control—especially after moving the scale or noticing inconsistencies.

Think of calibration like tuning a musical instrument. Even the best guitar sounds off if it’s not tuned properly. Your Eufy smart scale is no different. A quick calibration ensures it’s “in tune” with your body and environment, so every measurement counts.

What You’ll Need Before You Begin

Before starting the calibration process, gather a few items to make everything go smoothly:

• A known weight: This is the most important tool. Use a dumbbell, weight plate, or certified calibration weight (5–50 lbs is ideal). Avoid using household items like bags of flour—they’re rarely precise.
• A hard, flat surface: Place your scale on tile, hardwood, or laminate flooring. Avoid carpet, rugs, or uneven surfaces.
• Clean, dry feet: Moisture or dirt can interfere with the sensors.
• The EufySecurity app: Make sure it’s installed on your smartphone and connected to your scale via Bluetooth.
• Your smartphone: You’ll use it to follow calibration prompts in the app.
• A towel or cloth: To wipe down the scale if needed.

Having these ready will save time and help avoid mistakes during calibration.

Step 1: Prepare Your Eufy Smart Scale

Proper preparation sets the stage for a successful calibration. Follow these steps to get your scale ready:

Clean the Scale

Start by wiping the surface of your Eufy smart scale with a dry or slightly damp cloth. Remove any dust, dirt, or residue that might interfere with the sensors. Pay special attention to the four corner sensors—these detect your weight. Avoid using harsh chemicals or soaking the scale, as moisture can damage the internal components.

Let the scale air dry completely before use. Even a small amount of moisture can affect electrical readings, especially during body composition measurements.

Check the Battery Level

Low battery power can cause inaccurate readings. Open the battery compartment (usually on the bottom) and check that the four AAA batteries are fresh and properly installed. If the battery icon in the app shows low power, replace them before calibrating.

Tip: Use high-quality alkaline batteries for longer life and more stable performance.

Place the Scale on a Stable Surface

Position your Eufy smart scale on a hard, flat, and level floor. Tile, hardwood, or vinyl work best. Avoid placing it on carpet, rugs, or uneven surfaces like bathroom mats. Soft flooring can absorb pressure and cause the scale to tilt slightly, leading to incorrect readings.

If you must use the scale on carpet, place a sturdy, flat board (like a cutting board or plywood sheet) underneath to create a hard surface. But for best results, calibrate on a solid floor.

Turn On the Scale

Step on the scale gently with one foot to wake it up. The display should light up and show “0.0” or “— —”. Wait a few seconds until it stabilizes. If the screen shows an error code (like “Err” or “Lo”), refer to the troubleshooting section later in this guide.

Once the scale is on and stable, open the EufySecurity app on your phone.

Step 2: Open the EufySecurity App

The EufySecurity app is your control center for managing your smart scale. Here’s how to access the calibration feature:

Launch the App

Open the EufySecurity app on your smartphone. If you haven’t set it up yet, download it from the App Store (iOS) or Google Play (Android). Create an account or log in if you already have one.

Connect to Your Scale

Make sure your phone’s Bluetooth is turned on. The app should automatically detect your Eufy smart scale if it’s nearby and powered on. If not, tap the “+” icon in the app, select “Add Device,” and follow the prompts to pair your scale.

Once connected, your scale will appear in the app’s device list.

Navigate to Calibration

Tap on your scale’s name in the app. This opens the device dashboard. Look for a menu option like “Settings,” “Device Info,” or “Advanced Settings.” Inside, you should find a “Calibrate” or “Calibration” button.

Note: The exact menu layout may vary slightly depending on your app version. If you can’t find it, check for updates in your app store—Eufy frequently improves the user interface.

Step 3: Begin the Calibration Process

Now it’s time to calibrate your Eufy smart scale. Follow these steps carefully:

Select Calibration Mode

Tap the “Calibrate” button in the app. The screen will prompt you to place a known weight on the scale. The app may show instructions like “Place a known weight (e.g., 10 lbs) on the scale and wait for confirmation.”

Place the Known Weight

Carefully place your dumbbell or calibration weight in the center of the scale. Make sure it’s stable and not wobbling. Avoid stepping on the scale yourself during this step—only the known weight should be on it.

Wait for the scale to register the weight. The display will show the number, and the app may show a progress bar or confirmation message.

Confirm the Reading

The app will compare the scale’s reading to the actual weight. If they match (or are very close), it will confirm calibration success. If there’s a significant difference, the app may ask you to adjust or repeat the step.

Tip: Use a weight close to your body weight for best results. For example, if you weigh 150 lbs, a 15–20 lb dumbbell works well.

Complete the Process

Once confirmed, the app will save the calibration data. You’ll see a message like “Calibration Complete” or “Scale Calibrated Successfully.” The scale is now ready for accurate measurements.

Step 4: Test the Calibration

After calibration, it’s important to verify that everything is working correctly.

Step On and Measure

Step onto the scale barefoot, with clean, dry feet. Stand still in the center, distributing your weight evenly. Wait for the reading to stabilize—this usually takes 5–10 seconds.

The scale will display your weight and, if connected to the app, begin analyzing body composition.

Check the App Data

Open the EufySecurity app and view your latest measurement. Compare your weight to what you expect. If it’s within 0.2–0.5 lbs of your known weight, calibration was successful.

Also check body composition readings like body fat and muscle mass. While these can vary daily due to hydration and other factors, they should be consistent with your previous trends.

Repeat if Needed

If the reading seems off, repeat the calibration process. Sometimes environmental factors or a shaky surface can cause errors. Try calibrating again with a different known weight or on a more stable floor.

Tips for Accurate Calibration

To get the best results from your Eufy smart scale, keep these tips in mind:

• Calibrate after moving the scale: Even shifting it a few feet can affect calibration due to floor differences.
• Use the same time of day: Weigh yourself at the same time (e.g., morning, after using the bathroom) for consistent readings.
• Avoid extreme temperatures: Don’t calibrate in very hot or cold rooms—temperature can affect sensor performance.
• Keep the scale level: Use a bubble level app on your phone to check that the scale is perfectly flat.
• Don’t lean or shift: Stand still during measurement. Movement can skew results.
• Update the app regularly: Eufy releases updates that improve accuracy and add features.

Following these habits will help maintain long-term accuracy.

Troubleshooting Common Calibration Issues

Sometimes, calibration doesn’t go as planned. Here’s how to fix common problems:

Scale Shows “Err” or “Lo”

– “Err” usually means an unstable reading—check that the scale is on a flat surface and not wobbling.
– “Lo” indicates low battery—replace the batteries and try again.

App Won’t Connect to Scale

– Turn Bluetooth off and on.
– Restart the app and your phone.
– Make sure the scale is within 10 feet and not blocked by walls or metal objects.

Readings Are Inconsistent

– Recalibrate using a known weight.
– Ensure you’re standing still and centered on the scale.
– Check for dirt or moisture on the sensors.

Calibration Fails Repeatedly

– Try a different known weight.
– Move the scale to a different room with a harder floor.
– Contact Eufy support if the issue persists—there may be a hardware problem.

Body Composition Data Seems Off

– Remember that BIA readings can vary based on hydration, food intake, and time of day.
– Compare trends over weeks, not single readings.
– Ensure your profile in the app (age, height, gender) is accurate.

When to Recalibrate Your Eufy Smart Scale

Calibration isn’t a one-time task. To maintain accuracy, recalibrate your Eufy smart scale in these situations:

• After moving the scale: Even a small shift can affect calibration.
• After replacing batteries: New batteries can change electrical output.
• If readings seem inconsistent: Sudden jumps or drops in weight may signal a calibration issue.
• Every 3–6 months: Regular maintenance keeps your scale in top shape.
• After cleaning with liquids: Moisture can temporarily affect sensors.

Think of it like tuning your car—regular check-ups prevent bigger problems down the road.

Maintaining Your Eufy Smart Scale for Long-Term Accuracy

Beyond calibration, proper care extends the life and performance of your scale:

Clean Regularly

Wipe the surface weekly with a dry cloth. For deeper cleaning, use a slightly damp cloth—never spray water directly on the scale.

Store Properly

Keep the scale in a dry, temperature-controlled room. Avoid bathrooms with high humidity.

Avoid Overloading

Don’t place weights heavier than the scale’s maximum capacity (usually 400 lbs). Overloading can damage the sensors.

Use on Appropriate Surfaces

Always use the scale on hard, flat floors. If you must use it on carpet, place a rigid board underneath.

Monitor Battery Life

Replace batteries when the app warns you. Low power can cause erratic behavior.

Conclusion

Calibrating your Eufy smart scale is a simple but essential step to ensure accurate and reliable health data. By following this guide—preparing your scale, using a known weight, following app instructions, and testing your results—you’ll get the most out of your device. Remember, calibration isn’t just for new scales; it’s an ongoing practice that supports your health journey.

With proper care and regular checks, your Eufy smart scale will deliver consistent, trustworthy readings for years to come. So take a few minutes today to calibrate your scale—your future self will thank you.