Fitness expert tested and reviewed

Tracking your health and fitness is a great metric to keep you both motivated and accountable when it comes to physical health. While there are loads of fitness trackers, from rings to wrist wearables on the market, sometimes a heart rate monitor is the best tool for accurately and reliably delivering biometric stats. And after sweating it out with heart rate monitors that take a multitude of form factors, we decided these are the best ones to wear on your next run, HIIT class, or bike ride.


Read more: Best budget fitness trackers: Expert tested and reviewed

As is the case with most of Pocket-lint’s buyer’s guides, plenty of testing hours have gone into picking out the best HR monitors and along with accuracy we also pay attention to key elements like comfort, fit and how that heart rate data is presented. With that, let’s dive into our top choices, starting with the Polar H10 chest heart rate monitor.


Best heart rate monitors: Our top picks

Polar H10

1. Best heart rate monitor overall

Accurate, compatible, and comfortable

$89 $99 Save $10

If you care about supreme accuracy for everything from HIIT workouts to long runs, the H10 is the best in the business.

Pros

  • Comfortable to wear
  • Accurate HR for variety of activities
  • Works with host of apps and equipment
Cons

  • Chest strap design might feel constricting for some
  • Doesn’t deliver any additional metrics

The Polar H10 is proof that while smartwatches and fitness trackers are capable of monitoring your heart, the chest strap remains the most accurate way to do it.

To improve the comfort of wearing it, Polar uses a soft-touch textile strap and matches that up with a silicone spot design to make sure the chest strap stays put.

Additionally, the monitor uses ECG sensor technology to measure heart rate and is a significantly better performer than optical sensors for high intensity exercise like HIIT and interval running sessions. It can store a single training session while the Bluetooth and ANT+ connectivity powers means you can pair up watches and other connected equipment to it as well.

Polar H10 heart rate monitor

There’s no battery to charge with the kind of coin cell used inside of watches used to power workouts that will go for months as opposed to weeks. Ultimately, it’s a supremely comfortable chest strap-style monitor that crucially delivers where it matters and that’s serving up accurate heart rate data.

Garmin HRM-Pro Plus -1

Garmin HRM-Pro Plus

2. Best chest strap heart rate monitor for runners

A great chest strap monitor for additional running stats

$100 $130 Save $30

Garmin goes beyond heart rate to deliver more advanced metrics that can help you dig deeper into your form and technique.

Pros

  • Accurate HR data
  • Provides additional non-HR metrics
  • Now easier to remove battery
  • Great Garmin smartwatch integration
Cons

  • Pricier than other options on the market
  • No additional features to improve comfort

If you like the idea of a heart rate monitor that can also deliver more than insights beyond how hard you work out during workouts, that’s what the Garmin HRM-Pro Plus is capable of.

First and foremost, this is a chest strap monitor that uses ECG sensor technology to give you accurate heart rate data at a range of intensities and has both ANT+ and Bluetooth connectivity support to pair a whole host of devices beyond Garmin’s own.

Garmin HRM-Pro Plus -1

Plus, if you’re already using the monitor with one of Garmin’s watches, it will also record running-centric metrics like vertical oscillation stride length and ground contact balance, which can help you decipher if you’re observing good running technique and getting the most out of that running time. When you get on the treadmill, it’ll also capture distance covered for your indoor runs.

The monitor is powered by a coin cell battery that can give you up to a year of battery life depending on how regularly you use it. Garmin has also changed the way you get that battery out compared to the Garmin HRM to make it a more stress-free strap-on monitor.

Coros heart rate monitor 9

Coros Heart Rate Monitor

3. Best arm band heart rate monitor

Comfortable and capable

While the Coros heart rate monitor armband isn’t a ground-breaking model in terms of form factor or performance, it delivers reliable heart rate data, and promises comfortable arm wear for those who find a chest strap constricting.

Pros

  • Comfortable fit
  • Accuracy is consistent across low impact and high intensity exercise
  • Works with up to three Bluetooth devices at once
  • Up to 38 hours battery life
Cons

  • Lacks ANT+ connectivity
  • Can’t store data on the monitor
  • No massive extras using with Coros devices

The Coros heart rate monitor is a great option if you find the chest-strap style monitor constricting, but don’t exactly trust the readings from your smartwatch. Joining likes of the Polar Verity Sense, Wahoo Tickr Fit and the MyZone MZ-Switch in terms of a arm-band style, the Bluetooth-enabled moving heart rate tracking to the arm band offers a sleek design while the sensor is packed into scratch-resistant casing to keep it looking box fresh and carries a waterproof rating that does make it suitable for being submerged in water up to 30 meters. Note that the sensor does have to be charged and also requires proprietary charging cable to do so, which is always a slight bummer.

Coros heart rate monitor 4

While Coros is in the name, it’s convenient that you can use the sensor with other Bluetooth sports watches, smartwatches and gym equipment that support external heart rate sensors.

When it comes to accuracy, I’ve been very satisfied with what it’s delivered on the whole. On runs, general gym workouts and paired to indoor equipment it held up very well against a Garmin HRM-Pro chest strap monitor. In addition, it passed my true test, which was handling more high intensity exercise, which is where optical sensors, particularly wrist-based ones, tend to falter. I was happy to see that it tended to match up, or be 1-2 bpm out from a chest strap (screens included), which is a very good showing indeed.

Polar Verity Sense review: Adding heart rate to your workouts photo 10

Chris Hall/ Pocket-lint 

Polar Verity Sense

4. Best arm band heart rate monitor for cyclists

Versatile and convenient

For those who always monitor their activities with a phone – running with it, for example – the Polar Verity Sense is a way to easily add heart rate data to get more detailed bodily exercise insights to either your bicep or forearm.

Pros

  • Reliable heart-rate monitoring
  • Convenient, low profile wear
  • 20 hours of battery life
  • Supports two Bluetooth connections and ANT+
Cons

  • Can’t edit data in self-monitoring mode

Essentially, the Polar Verity Sense is simply the optical sensor, battery and connectivity hardware you might find in a sports watch packed into a 30mm, 1cm thick button, with the idea that you can wear the sensor rather than having to wear a watch, or as an alternative to wearing a chest strap.

The Verity Sense is designed to be worn against the skin, clipping into a holder on an elasticated band which will keep it in place – essentially, you wear it like a band. This can be adjusted to fit, so will suit various sizes, designed to be worn on the fore or upper arm. However, Polar advises against wearing on it the wrist like a watch, which given the size, isn’t an ideal position anyways.

Polar Verity Sense review: Adding heart rate to your workouts photo 7

Chris Hall/ Pocket-lint 

When we reviewed the Verity Sense, we found it easy just to slide it up the arm to a position where it was tight enough to stay in position when cycling, running, and doing plyometric exercises – but it wasn’t so tight that it became uncomfortable. In that sense, it’s comfortable, more convenient and, for many people, more accessible than a chest strap.

Additionally, its low profile is especially advantageous when wearing compression cycling gear as we didn’t have to fight to get it under tight sleeves as we might with chest straps or watches.

The Verity Sense also boasts great connectivity, supporting ANT+ and two simultaneous Bluetooth connections, so you can have it connected to different devices if you want to record and monitor heart rate on two different platforms simultaneously.

Apple Watch Series 9

Apple Watch Series 9

5. Best heart rate monitoring smart watch

A smartwatch for iPhone owners that delivers accurate data

Whether it’s exercise or keeping tabs on your heart health, the Apple Watch Series 9 stands out from the smartwatch crowd.

Pros

  • Heart rate during high intensity exercise
  • Works with third party apps
  • Can pair up external sensors
Cons

  • For iOS users only
  • Presentation of HR stats not super slick

The Apple Watch Series 9 is rightfully the best smartwatch you can buy if you own an iPhone and if you care about monitoring your heart rate, it’s well-equipped to do that.

Apple uses its own light-based, optical heart rate sensor technology that will put in an impressive performance even during more high intensity exercise time when many optical sensors tend to falter.

That heart rate data can be presented inside of Apple’s own native apps, with a rich array of third party apps also available through the Apple App Store giving you scope to analyze and present data in apps you already use on a regular basis.

Watch Series 9 - 11

Pocket-lint

Beyond exercise, you’re also getting an ECG sensor here too if you care about monitoring heart rate in a more clinical-grade fashion, while Apple does also let you pair external heart rate sensors over Bluetooth to make sure you have an alternative way to get that accurate heart rate data.

Garmin Forerunner 265

Garmin Forerunner 265

6. Best sports watch for heart rate monitoring

Great heart rate for runs and other exercise time

The AMOLED multisports watch packs in Garmin’s latest HR tech to give you solid accuracy for workouts.

Pros

  • AMOLED display to view stats
  • Lots of heart rate-powered features
  • Can pair external heart rate monitors
Cons

  • Presentation of data in Garmin Connect
  • Similar performance from cheaper Forerunner 255

Sports watches and running watches have come on leaps and bounds in terms of improving tracking accuracy from the wrist and the Garmin Forerunner 265 certainly stands out as one of the best.

Read more: What is Gartmin Body Battery and how does it work?

Aside from Garmin adding a more colorful and vibrant AMOLED screen to its now pricier mid-range multisports watch, the Forerunner 265 packs in Garmin’s latest Elevate optical heart rate sensor technology that along with a great fit means it’s very capable when it comes to tracking heart rate in real-time.

Garmin Forerunner 265

That data is stored inside of Garmin’s Connect app, which is a bit on the busy side, though if you’re using apps like Strava or Trainingpeaks you can sync that data to an app that displays data in a more digestible manner. Additionally, having that accurate heart rate means you can trust features like Garmin’s Training Readiness to tell you when you should be training or taking a day off from training.

Fitbit Charge 6

Fitbit Charge 6

7. Best fitness tracker for heart rate monitoring

For heart rate stats in a slim, band form

Fitbit packs in optical and ECG sensors to give it the heart rate powers of more expensive smartwatches.

Pros

  • Bright, AMOLED screen
  • Good HR for most exercises
  • Heart rate-fuelled Daily Readiness scores
Cons

  • HR struggles with high intensity workouts
  • Can’t pair external heart rate sensors

The Charge is Fitbit’s flagship fitness tracker and typically gets crammed with features and the Charge 6 is a bit of a heart rate monitoring powerhouse.

It has an optical heart rate sensor that is capable of delivering good heart rate accuracy for workouts until you really up the intensity and will now connect with compatible gym equipment like Peloton and Concept2 rowers to see real-time heart rate on your machine.

Fitbit Charge 6

The Charge 6 also uses that data to power useful features like Daily Readiness Scores to better understand when to rest or train and capture VO2 Max measurements here as well.

If you care about continuously measuring your heart rate, the Charge 6 is well-equipped to do that and also includes an ECG sensor to make it one of the few fitness trackers that can capture clinical-grade heart rate measurements.

Read more: Fitbit Charge 6 vs. Fitbit Versa 4: What’s the difference?

While it’s not the most robust heart rate tracker we’ve tested, it offers a good performance across the board that makes it one to help you pay closer attention to that heart beating.

The bottom line: What’s the best heart rate monitor?

Based on our testing, the Polar H10 is the best heart rate monitor because while smartwatches, sports watches and fitness trackers have become more reliable when monitoring heart rate, when it comes to performing across all types of exercises, the Polar H10d delivers the most accurate results.

Of all the chest strap monitors we’ve tested it aims to make wearing a chest strap a comfortable experience and gives you the kind of connectivity support that means the monitor is compatible with, and extends its data to a host of apps and devices, including a smartwatch.

Unsurprisingly, the chest monitor doesn’t grant a display for real-time performance viewing, and you’re getting a small amount of on-board storage, but it works straight out of the box, pairs quickly, and with a solid battery life, it doesn’t require a constant charge.

Polar does offer a cheaper H7 heart rate monitor chest strap, but we think it’s worth paying extra for the H10 to get the best experience along with that top tracking accuracy.

Polar H10 heart rate monitor

Polar H10

Editor’s Choice

$89 $99 Save $10

If you care about supreme accuracy for everything from HIIT workouts to long runs, the H10 is the best in the business.

How did we pick these best heart rate monitors?

The only way to see what these heart rate monitors are up to the task and find out the ones that deliver, is to put them to the exercise test. So they’ve been used for a range of indoor and outdoor exercises to push the monitors to their limits. That includes weeks and months of testing during gym workouts including strength training and gym classes, using them for indoor and outdoor runs at a mixture of speeds and for different sessions. We also use the monitors for shorter and longer periods of exercise to see how they fare not only for accuracy, but also on being comfortable to wear.

What should I consider when buying a heart rate monitor?

Below are what we consider the top three most important considerations when buying a heart rate monitor, ECG versus Optical monitoring, wearing style, and connectivity.

Using ECG vs Optical HR: As it’s the method in which we measure heart rate, this is a very big thing to factor when buying a heart rate monitor. ECG sensor technology is typically associated with chest strap monitors and measures electrical activity of the heart and is considered to be the most accurate way to track heart rate during exercise. Optical sensors offer a more convenient way to measure heart rate but can be susceptible to more accuracy issues, particularly when positioned at places on the body where an increase of movement is just one of the factors that can affect accuracy.

The types of exercises you’re doing can impact on heart rate monitor performance as well. So, you might get reliable data from heart rate monitors with optical sensors when doing more stationary exercises like indoor bike rides, but could struggle in a HIIT class where movement is more frenetic.

Connectivity: It might sound like an obvious one but if you’re planning to connect your heart rate monitor to another device or just to your phone, make sure the monitor has the ability to do that. Most monitors offer Bluetooth connectivity to wirelessly connect to Bluetooth-enabled gym equipment or smartwatches that support Bluetooth pairing. If a monitor mentions it has dual or multiple connectivity support, that’s useful to have if you want to transmit or share heart rate data to multiple devices at the same time. So that would be ideal for instance for someone that has an indoor bike setup, and you want to share or display that data on a computer and maybe also on a virtual training platform like Zwift.

Wearing style: Heart rate monitors can now be worn on your chest, wrist and even on your arm, so think about the types of exercises you’re planning to use it for and how that might impact on fit. Also, factor in whether you prefer to see your progress in real-time and would benefit from a monitor with a screen or you’re happy to go for a monitor to go about its business as you work out that you can review stats after the exercise time is done.

Should I use a chest strap, arm band, or sports watch, or fitness tracker as a heart rate monitor?

Ultimately, it comes down to preference, but based to our testing and experience, while chest monitors are great for accuracy and offer a range of device connectivity, they can feel a bit constricting – especially if you’re wearing compressive running or cycling gear. In that case, it might be better to opt for an arm band monitor if you want the same direct skin to sensor contact, otherwise a capable sports watch or smartwatch – like the Apple Watch Series 9 or Garmin Forerunner 265 offer great insight as wrist wearables and time trackers. Even the Fitbit Charge 6 has proven to be quite capable and lightweight.

What is the best heart rate monitor to wear for cyclists?

Based on our testing, the unobtrusive and subtle Verity Sense is a great heart rate monitor option for cyclists.

What does ECG mean for your heart rate?

An electrocardiogram (ECG) can check your heart rhythm and activity. Heart rate monitors have sensors in place to quickly run that test without complex or bulky medical equipment.

Does the Apple Watch use ECG?

Since the Apple Watch Series 8 made its debut in 2018, succeeding Apple Watch models (including the 2022 SE) do use ECG/ EKG sensors to monitor irregular rhythm notification features. This means Apple Watch users can perform an initial ECG tests on their own rather than rushing to a doctor. However, it’s important to remember that heart rate monitors and Apple Watches- no matter how advanced – are a tool rather than a determinant, and by no means as smart or smarter than your doctor.

What is ANT+?

Advanced and Adaptive Network Technology, orANT+, is widely supported in sports devices, allowing connection to Peloton, Garmin Edge bike computers, and more.

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