Fitbit Heart Rate Not Working

Have you ever felt frustrated when your Fitbit doesn’t seem to be measuring your heart rate accurately during your workouts or even throughout the day? You’re not alone. Many users face issues with Fitbit’s heart rate tracking technology. This blog aims to shed light on the reasons behind these issues and offer practical solutions. 

From ensuring you wear your Fitbit correctly to updating its software and ensuring the sensors maintain good contact with your wrist, we’ve got you covered. If all else fails, don’t forget the resources at your disposal, like reaching out to customer support or making use of Fitbit’s warranty.

Fitbit’s heart rate features are a boon for those who like to track their heart rate, whether during the day, at night while sleeping, or during workouts. However, like any technology, it can sometimes falter. 

Whether you’re an obsessive Fitbit user or someone who occasionally checks, it’s essential to understand the possible reasons for any discrepancies and the troubleshooting options available. Making this a priority ensures that you get the most out of your device’s features, regardless of the model you own.

Fitbit Heart Rate Not Working

If your Fitbit’s heart rate monitor isn’t working, ensure the device fits snugly, neither too tight nor too loose. Clean the sensor area with a lint-free cloth. Check that “Heart Rate tracking is on in your Fitbit’s settings. Update your Fitbit’s firmware via the official app. Additionally, heavy physical activity or skin changes could impact readings. Restart the device following the manufacturer’s instructions. If issues persist, your Fitbit may have a hardware issue, requiring you to contact Fitbit support or seek a replacement/repair. Remember, external factors like temperature can affect the monitor’s performance.Fitbit Heart Rate Not Working

Understanding Fitbit’s Heart Rate Tracking Technology

Fitbit employs a technology called photoplethysmography (PPG) to monitor heart rates. This method involves shining light onto blood vessels and analyzing the reflections to measure changes in blood volume. As your heart beats, these changes in blood volume are detected, allowing the device to estimate your beats per minute (BPM). 

Depending on the specific Fitbit model, the tracking technology might differ slightly. Some devices utilize green or red LED lights, while others might combine both for more precise readings. Algorithms are in place to filter out potential noise or disturbances from the raw data, ensuring accurate readings.

However, it’s crucial to remember that Fitbit’s heart rate monitoring is primarily designed for general fitness and wellness. It isn’t meant to replace professional medical devices. 

If you have concerns about your heart health or any specific medical conditions, it’s always best to consult a qualified healthcare professional. With a basic grasp of how Fitbit’s heart rate tracking works, you’re better equipped to address any issues and ensure your device functions correctly.

How Heart Rate Tracking Works on Fitbit Versa 2, Inspire 2, & Charge 3?

The heart rate tracking on devices like Fitbit Versa 2, Inspire 2, and Charge 3 is grounded in the same PPG technology. However, the implementation might vary slightly across devices. These gadgets use a mix of green and red LED lights in conjunction with a photodiode to gauge blood volume changes and subsequently estimate heart rate. 

Factors like skin type, how the device fits, and even motion during activities can influence the readings. For the best results, Fitbit suggests wearing the device snugly on the wrist and ensuring the sensors remain clean.

If you ever encounter issues with your Fitbit Versa 2, Inspire 2, or Charge 3’s heart rate tracking, there are several troubleshooting steps to consider. From ensuring the device is worn correctly to keeping the sensors clean and even checking for software updates, these measures can help rectify any discrepancies and enhance your tracking experience.

Reasons Why Fitbit Heart Rate Not Working:

Fitbit devices, such as the Fitbit Versa 2, Inspire 2, and Charge 3, are renowned for their heart rate tracking capabilities. However, there are several reasons why the heart rate feature might not function as expected. Let’s delve into some of the most common reasons.

Poor device placement:

For an accurate reading, the device must be worn securely and in the correct position on the wrist. If the Fitbit is not positioned properly, it might not capture the heart rate accurately. Ensure that the device is neither too tight nor too loose, and always check its placement, especially during rigorous activities.

Skin condition and cleanliness:

The condition and cleanliness of the skin play a pivotal role in heart rate tracking. Sweat, dirt, and oils from the skin can interfere with the sensors, leading to inaccurate readings.

The Fitbit heart rate tracking system relies on consistent contact with the skin. If the device is too loose, it might not maintain that essential contact. Conversely, if it’s too tight, it might not read the heart rate correctly due to pressure.

Software or firmware issues:

The software or firmware of the device can also impact heart rate tracking. Outdated software or incorrect settings might hinder the device’s ability to track the heart rate accurately.

It’s crucial to keep the device updated to the latest software version. Additionally, always ensure that you’ve selected the appropriate settings for heart rate tracking to guarantee accurate results.

Fitbit Heart Rate Not Working: How To Fix

Your Fitbit is an essential tool in your health and fitness journey. It’s designed to provide insights into your daily activities, sleep patterns, and most importantly, your heart rate.

But when the heart rate monitor doesn’t function as expected, it can be both frustrating and concerning. Let’s explore some comprehensive solutions to address this issue.

Ensure proper device placement:

Why it matters:
The way you wear your Fitbit can significantly impact its ability to track your heart rate accurately. The device’s sensors need to maintain consistent contact with your skin to provide reliable readings.
Steps to ensure optimal placement:
  1. Wear your Fitbit about two finger widths above your wrist bone.
  2. Ensure the device is snug but not too tight. It should not slide around during regular movements but should also not cause any discomfort.
  3. During workouts, consider moving it a bit higher up your arm for better accuracy, as intense movements can sometimes disrupt readings.

Clean the sensors:

Why it matters:
Over time, sweat, dirt, and natural skin oils can accumulate on your Fitbit’s sensors, potentially interfering with its tracking capabilities.
Steps for effective cleaning:
  1. Use a lint-free or microfiber cloth. Avoid using abrasive materials that could scratch the device.
  2. If necessary, dampen the cloth with a bit of isopropyl alcohol. This can help in removing stubborn residues.
  3. Gently wipe the sensors and allow them to air dry before wearing the device again.

Improve skin contact:

Why it matters:
For those with dry skin or tattoos, the Fitbit might sometimes struggle to maintain consistent readings.
Steps to improve contact:
  1. Moisturize your wrist before wearing the device. This can enhance the sensor’s accuracy.
  2. Ensure the band material is suitable for your skin type. Some people might have reactions to specific materials, causing them to wear the device too loosely.

Adjust device settings:

Why it matters:
Your Fitbit comes equipped with various settings that can influence heart rate tracking’s frequency and accuracy.
Steps to optimize settings:
  1. Navigate to the Settings app on your device.
  2. Look for heart rate tracking options and adjust as per your preference.
  3. Some devices offer settings like “Auto” or “Every second.” Choose the one that suits your needs best.

Update firmware/software:

Why it matters:
Regular updates often come with improvements and bug fixes, enhancing the device’s overall performance.
Steps to update:
  1. Connect your Fitbit to its paired device, usually a smartphone or computer.
  2. Open the Fitbit app and navigate to the device settings.
  3. Check for available updates and install if any are present.

Reset the device:

Why it matters:
Occasionally, software glitches can cause performance issues. Resetting can often resolve these problems.
Steps to reset:
  1. Backup any essential data, as some resets might erase your information.
  2. Follow the device-specific instructions to perform a reset. This usually involves pressing and holding certain buttons on the device.
  3. Once reset, set up your device again and check if the heart rate monitor functions correctly.

Contact Fitbit support:

Why it matters:
Sometimes, the issue might be beyond simple troubleshooting and could require expert intervention.
Steps to contact support:
  1. Visit the official Fitbit website.
  2. Navigate to the support section and choose your device model.
  3. Follow the prompts to either chat with a representative or find contact information for more direct support.

Fitbit Versa Heart Rate Monitor not Working: How To Fix:

When your Fitbit Versa’s heart rate monitor stops working, it’s more than a simple inconvenience. This feature is crucial for monitoring your daily health and fitness routines.

Here’s a more detailed, step-by-step guide to troubleshooting and fixing the heart rate monitor, ensuring it functions optimally to track your heart rate accurately.

Turn ON the Heart Rate Monitor:

Firstly, it’s essential to confirm that your Fitbit Versa’s heart rate monitor is activated. If the monitor is off, you won’t see the green light that typically blinks when the feature is operational. Here’s how to check and reactivate it:

  1. Wake your Fitbit Versa by tapping on the clock face screen.
  2. Swipe through the menus until you find ‘Settings.’
  3. Within ‘Settings,’ look for the ‘Heart Rate’ option and tap on it.
  4. If it’s off, toggle the option to turn it on.
  5. Check for the green light on the sensor side of the band to confirm it’s working.

This procedure is straightforward but often overlooked, and it’s a common solution for many users facing issues with their heart rate monitors.

Clean the Back of Your Fitbit Versa:

Dirt and residue can interfere with your Fitbit’s ability to read your heart rate. The sensor needs to be in direct contact with your skin to function correctly. Follow these steps to clean it:

  1. Remove your Fitbit Versa from your wrist.
  2. Using a small piece of cotton and rubbing alcohol, gently clean the sensor area on the back of the device.
  3. Allow it to air dry for a few minutes before putting it back on.
  4. Ensure the green light is on, indicating the heart rate monitor is functioning.

Regular cleaning can prevent tracking issues related to skin contact.

Reboot your Fitbit:

Like many tech devices, your Fitbit may benefit from a simple reboot. Restarting it can resolve glitches and restore functionality:

  1. Access the ‘Settings’ from the clock face screen by swiping.
  2. Scroll and tap ‘About,’ then select ‘Shut Down.’
  3. Restart your Fitbit by pressing the left button (or the haptic button) until you see the Fitbit logo.
  4. Check if the heart rate monitor is working correctly.

Rebooting can resolve transient issues and is a quick fix to try before exploring more technical solutions.

Change the Location of the Fitbit on Your Wrist:

The position of your Fitbit on your wrist significantly impacts its ability to monitor your heart rate. If it’s too high or too low, it may not detect your pulse correctly. Here’s how to find the ideal location:

  1. Position your Fitbit approximately two finger-widths above your wrist bone. This placement is usually optimal for reading your heart rate.
  2. Make sure the band is snug but not too tight. It shouldn’t constrict your wrist, but it also shouldn’t slide around.
  3. Check your heart rate reading to ensure it’s functioning correctly.

Adjusting the location can improve the accuracy of the readings, especially during workouts or sleep.

If the Fitbit Heart Rate Monitor is Too High/Low:

Unusual readings during intense physical activity can be concerning. If you notice your heart rate monitor displaying sudden spikes or drops, it’s essential to remain calm and follow these steps:

  1. Stop your activity and find a place to sit down.
  2. Keep your arm still and try to relax, taking deep breaths.
  3. Wait for about 10-30 seconds while your Fitbit stabilizes its reading.
  4. If the heart rate displayed seems abnormal, consider consulting with a healthcare professional.

Remember, various factors, including stress and caffeine, can affect heart rate readings.

If Fitbit Heart Rate Monitor is Grey:

If your heart rate monitor is grey, it’s searching for a signal. This issue might occur because of several reasons, including a low battery or poor fit on your wrist. Here’s what you can do:

  1. Ensure your Fitbit is charged.
  2. Adjust the fit on your wrist, ensuring it’s not too tight or too loose.
  3. Wait for a moment to allow your device to find a signal.
  4. If it remains grey, consider restarting your Fitbit.

Change the Accessory Band:

The band you’re using with your Fitbit Versa might be causing issues, especially if it’s not the correct size for your wrist or if it’s designed in a way that interferes with the sensor. Consider these steps:

  1. Remove the current band following the instructions provided by Fitbit.
  2. Choose another band that fits your wrist comfortably and securely.
  3. Attach the new band, ensuring it’s correctly in place.
  4. Wear your Fitbit and monitor the heart rate to check for any improvements.

A well-fitting band can make a significant difference in the accuracy of your heart rate readings.

Change the Clock Face:

Sometimes, the issue could be as simple as the clock face interfering with the heart rate monitor’s functionality. Changing the clock face might resolve this:

  1. Open the Fitbit app on your smartphone.
  2. Go to the ‘Clock Faces’ section and choose a different clock face.
  3. Sync your Fitbit to apply the changes.
  4. Observe if this affects the heart rate monitor’s performance.

Try Syncing with Your Phone/Tablet Again:

Connectivity issues between your Fitbit and your phone or tablet can cause several features to malfunction, including the heart rate monitor. To re-establish a solid connection, you might need to re-sync your device:

  1. Open the ‘Settings’ app on your phone or tablet.
  2. Navigate to ‘Bluetooth’ and find your Fitbit on the list of paired devices.
  3. Select ‘Forget Device.’
  4. Re-pair your Fitbit following the standard Bluetooth pairing process.
  5. Once connected, open the Fitbit app and sync your device.

Re-syncing ensures that your device maintains a stable connection with the Fitbit app, which is crucial for all its features to function correctly.

If your Fitbit is Wet, Dry it:

While the Fitbit Versa is designed to be water-resistant, its heart rate monitor might not function correctly if the device is wet. Whether you’ve been swimming or caught in the rain, it’s essential to dry your Fitbit to keep it working optimally:

  1. Gently shake off any excess water from your device.
  2. Pat your Fitbit dry with a soft towel. Avoid using heat, like a hairdryer, as this could damage the device.
  3. Let it air dry completely before putting it back on.
  4. Check the heart rate monitor to see if it’s functioning better.

Hard Reset/Factory Reset Your Fitbit:

If all else fails, a hard reset or factory reset might be necessary. This process will erase all data on your device that hasn’t been synced with the Fitbit app, so it’s considered a last resort:

  1. Attach your Fitbit Versa to its charging cable and ensure it’s charging.
  2. Find the small button on the back of the charging cable.
  3. Use a paperclip or a similar tool to press the button three times, pausing between presses.
  4. Once you see the Fitbit logo on the screen, and the device vibrates,

Fitbit Heart Rate Not Working Versa 2: Here’s How to Fix It:

Check device placement:

For the Fitbit Versa 2 to provide accurate heart rate readings, it’s essential to ensure it’s positioned correctly on your wrist. An improper fit or a too loose placement can lead to inaccurate readings. Always make sure the device sits snugly on your wrist, maintaining consistent contact for optimal results.

Clean the sensors:

Your skin naturally produces oils, sweat, and can collect dirt throughout the day. These elements can interfere with the heart rate sensors on your Fitbit. For accurate tracking and optimal contact, regularly clean the sensors. This will ensure that external factors don’t hinder the device’s performance.

Adjust wristband fit:

The wristband’s fit plays a crucial role in the accuracy of heart rate readings. If it’s too tight or too loose, it can impact the results. Adjust the wristband to achieve a snug yet comfortable fit, ensuring consistent contact with your skin.

Update software:

Outdated software can sometimes be the culprit behind heart rate tracking issues. Regularly check for software updates for your Fitbit Versa 2. Installing the latest version can often resolve any tracking discrepancies and enhance the device’s overall performance.

Restart your Fitbit Versa 2:

If you’re facing persistent issues with heart rate tracking, consider giving your Fitbit Versa 2 a fresh start. To do this:

  • Press and hold the side button for about 10 seconds.
  • Wait for the Fitbit logo to appear on the screen.
  • Release the button.

This soft reset can often address performance-related problems and get your device back on track.

Check heart rate settings:

Dive into the settings of your Fitbit Versa 2 to ensure that the heart rate settings align with your preferences and needs. Navigate to the home screen, swipe left to access the “Settings” option, and ensure the “Heart Rate” setting is toggled on. Adjust the tracking mode and frequency as per your activities and workouts.

Contact Fitbit support:

If you’ve tried all the above steps and the issue still persists, it might be time to reach out to Fitbit support. Their customer support team is equipped with troubleshooting expertise and can provide guidance on potential hardware issues.

Always refer to Fitbit’s official documentation and support resources for the most accurate and up-to-date information.

Fitbit Heart Rate Not Working Inspire 2: Here’s How to Fix It:

If you’re grappling with heart rate tracking issues on your Fitbit Inspire 2, don’t fret. Here’s a step-by-step guide to troubleshoot and rectify the problem:

1. Rebooting the Fitbit Inspire 2:

  • Navigate to the Settings of your device.
  • Scroll until you find the Reboot Device option and tap on it.
  • Firmly press and hold the screen for a few seconds.
  • Once the device powers down, release your finger.

This process can help alleviate certain performance issues.

2. Enabling Heart Rate Tracking:

  • Press and hold both side touch buttons until the water lock screen is displayed.
  • On this screen, locate the On Clip option and select it.
  • Proceed to choose the Allow All Features option.
  • Ensure the On Wrist feature is deactivated.
  • Finally, head back to the device’s settings and confirm that the heart rate feature is activated.

3. Restarting the Device:

  • Firmly press and hold the button on the side until the Fitbit logo appears.
  • Release the button to initiate a restart, which might resolve any lingering heart rate tracking issues.

Fitbit Heart Rate Not Working Charge 3 & 4: Here’s How to Fix It:

For those using Fitbit Charge 3 or 4 and facing heart rate discrepancies, here’s a quick guide:

1. Accessing Heart Rate Settings:

  • Swipe across the screen, either from the right or left, to open the settings menu.
  • Once inside, scroll until you find the Heart Rate option.
  • Tap on it to adjust according to your desired setting.

Note: If you’re using Fitbit Charge 3, you might also be interested in learning how to reset it.

Fitbit Heart Rate Not Working Charge 5: Here’s How to Fix It:

If your Fitbit Charge 5 isn’t tracking your heart rate accurately, consider the following steps:

1. Adjusting Device Placement:

Ensure that your Fitbit Charge 5 is securely fastened to your wrist. An improper fit can lead to inaccurate readings.

2. Cleaning the Device:

Oils, dirt, and sweat can interfere with the device’s sensors. Regularly clean the back of your Fitbit and ensure your skin is dry before wearing it.

3. Restarting the Fitbit Charge 5:

  • Hold down the side button for about 10 seconds.
  • Wait for the Fitbit logo to display, then release the button.

4. Updating the Firmware:

Connect your Fitbit Charge 5 to the Fitbit app on your smartphone. Check for any firmware updates and install if available.

5. Seeking Support:

If the problem persists, it might be time to contact Fitbit’s customer service for further assistance or even consider a device repair or replacement.

Fitbit Heart Rate Not Working During Exercise?

Experiencing issues with your Fitbit’s heart rate tracking during workouts can be both frustrating and concerning. But don’t fret! Here’s a comprehensive guide to help you troubleshoot and hopefully resolve the issue.

Ensure proper device placement:

When engaging in exercise, it’s pivotal to ensure your Fitbit device is securely placed on your wrist. The device should be snugly fitted, maintaining close contact with your skin. This ensures accurate heart rate tracking. If it’s too loose or too tight, it might not capture your heart rate correctly.

Clean the sensors and your skin:

Before you start your exercise session, ensure both the sensors on the back of your Fitbit device and your skin are clean and dry. Sweat, dirt, and oils can interfere with the heart rate tracking. A simple wipe down with a lint-free cloth can make a significant difference.

Adjust activity settings:

Different workouts might require different activity settings on your Fitbit. Ensure that the correct activity mode aligns with your workout in the Fitbit app. This configuration aids in more precise heart rate tracking during exercise.

Check heart rate zones:

Your Fitbit device uses heart rate zones to gauge the intensity levels of your exercise. It’s essential to ensure these zones are set up correctly in your device or app. They should align with your fitness level and exercise goals. This way, you can track whether you’re hitting your desired intensity during workouts.

Consider factors affecting heart rate accuracy:

Several factors can influence the accuracy of heart rate readings during exercise. High-intensity movements, sweat, and even poor circulation can lead to occasional inaccuracies. While the Fitbit aims to be as precise as possible, it’s essential to be aware of these potential discrepancies.

Update firmware and app:

To ensure optimal performance, regularly check that your Fitbit device’s firmware and the connected Fitbit app on your smartphone are up-to-date. Firmware updates often come with bug fixes or improvements that can enhance heart rate tracking accuracy.

Contact Fitbit support:

If you’ve tried all the above steps and the issue persists, it might be time to reach out to Fitbit support. They can offer further troubleshooting steps, provide information on firmware updates, or suggest other solutions to address the heart rate tracking issue during exercise.

Frequently Asked Questions (FAQ):

Is my Fitbit reading my heart rate wrong?

Doubts about your Fitbit’s heart rate readings can be unsettling. The device’s advertised precision may seem questionable when manual checks reveal discrepancies. Ensuring your device is clean and properly positioned on your wrist is crucial; it shouldn’t be too loose or too tight.

Compare the Fitbit’s readings with a manual pulse check to confirm accuracy. If inconsistencies persist, consider the device’s placement or consult Fitbit support for guidance.

How accurate is the heart rate on Fitbit?

The accuracy of Fitbit’s heart rate monitoring has been scrutinized through rigorous studies, such as one conducted by the University of Oregon. This research, which specifically evaluated the Fitbit Charge 2 HR, compared its readings against an ambulatory ECG, revealing significant insights into its precision.

Furthermore, initiatives like the Fitbit Heart Study underscore the device’s potential in detecting conditions like Atrial Fibrillation, affirming its credibility as a health monitoring tool.

Where does Fitbit track your heart rate?

Fitbit’s heart rate tracking is multifaceted, offering real-time data and comprehensive insights. From monitoring heart rate zones during exercise to analyzing Resting Heart Rate and sleep patterns, Fitbit provides a wealth of information.

Advanced metrics like VO2 Max and stress management tools further enhance its utility. By synthesizing this data, Fitbit helps users navigate their health and fitness journeys with tailored recommendations.

Does your Fitbit show your heart rate as zero (0) or a dashed line?

Encountering a zero or dashed line for your heart rate on your Fitbit can indicate a deactivated monitoring feature. Resolving this requires a quick settings check to ensure the “Auto” heart rate feature is enabled.

For persistent issues, especially with specific models like the Fitbit Sense or Versa 3+, restarting the sensor or seeking Fitbit support is advisable. These measures ensure the device’s functionality is fully restored.


Concluding our guide on “Fitbit Heart Rate Not Working,” it’s imperative to embrace a broader perspective. Technological aids like Fitbit are phenomenal, but they remind us of an essential truth: the complexity and sensitivity of the human body. Sometimes, these gadgets serve not just as health monitors but as metaphors, highlighting the intricate balance required in our own lives — between tension and ease, cleanliness and exposure, update and obsolescence. As we strive for optimum health, this delicate harmony extends beyond our wrists to our holistic well-being. Perhaps, in troubleshooting our devices, we are called to fine-tune not just technology but also our lifestyles.

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