Apple Watch HIIT Workout

How Accurate is Apple Watch for HIIT Workout?

Apple Watch is one of the most accurate smartwatches in the world, but today’s question is: How Accurate is Apple Watch for HIIT Workout? Let’s find out.

Apple Watch HIIT Workout

HIIT or High-Intensity Interval Training is a popular form of interval training, and it comes with tons of health benefits. Just like most smartwatches, Apple Watch is also capable of tracking HIIT workout, but just like the others, Apple watch is also not very accurate. But is there any way to fix it? Let’s find out.

How Accurate is Apple Watch for HIIT Workout? Can I Trust It?

Apple Watch is one of the most accurate smartwatches in the world, and it has been proven on many occasions. According to a study by Stanford University, Apple watch was the most precise smartwatch in their research in terms of Heart Rate Tracking.

According to the study, the Apple watch topped the group with a median error rate of only 2% in Hear-rate monitoring, which is pretty accurate. However, the researchers only monitored the performance of the watches for cycling and walking on the treadmill. Whereas, when it comes to HIIT, you will be doing a lot of irregular movements, which will make it difficult for the watch to accurately track your heart rate.

How do you do HIIT on Apple Watch?

Apple’s official page also states that “Some of the irregular movements in HIIT workouts might prevent a heart rate measurement.” This statement clearly says that depending on the HIIT workout you are doing, it might be difficult for the Apple Watch to track your heart rate.

For example, if you are doing a HIIT workout such as Mountain Climbers, where your arms stay stationary, in this case, the watch will be able to get the accurate readings. However, if you are doing a workout such as Burpees, Jump squats, or other exercises, which involves a lot of movements, it will be difficult for the watch to track your Heart Rate.

workout start

Considering all these facts, I can conclude that the Apple Watch is not very accurate for HIIT workout. In fact, most smartwatches aren’t reliable when it comes to HIIT because this workout involves a lot of irregular movements and sharp picks of heart rate pace, which make it difficult for the Heart-Rate sensor to track it on your wrist.

Now the question is: How to improve the accuracy of Apple Watch for HIIT workout? The answer to this question is pretty simple. If you want to make sure that your HIIT gets tracked accurately, then you will need to invest in a chest strap.

The reason why I’m recommending the chest strap is that because it sits right next to your Heart, so even if you do irregular movements, it will be easier for the Heart-rate sensor to keep track of your Heart Rate.

Read here a post that I wrote on the best fitness trackers with chest straps.

You can get a good Bluetooth Chest strap which is compatible with Apple Watch. There are a lot of good chest straps out there, but these are the best chest straps for Apple watch.

  • Wahoo TICKR X
  • Polar H10
  • Polar T31
  • Garmin HRM-Swim

These are some of the best Chest Straps for Apple watch, and all of them work really well with the Apple watch. You can my complete guide on this topic, where I have shared the details and everything else which you should know.

How do you do HIIT on Apple Watch?

Apple Watch supports the HIIT workout, and it comes with a dedicated workout profile that you can use for HIIT. Simply press the HIIT Icon on your Apple Watch, and the watch will start tracking your workout.

Here is a related post that I wrote regarding the best Apple Watch running Apps for Intervals & Splits.

How Long Should HIIT Intervals be?

There is no hard and fast rule about the intervals, so it will mainly depend on your stamina. Generally, people do the HIIT for around 45 seconds and then take 30 seconds for recovery, and they repeat this interval for a longer duration.

The ideal duration of HIIT is also not defined, but if you want to get into better shape than you should try to do 30 to 60 minutes of HIIT workout. You also don’t have to start with 30 or 60 minutes; instead, you can start with 5 or 10 minutes HIIT workout.

HIIT Intervals

Once you start feeling that you can easily do 10 minutes HIIT workout, you can increase the duration and so on. This process will boost your stamina, and it will be easier for you to achieve your goals.


That’s all, folks. Now you know how accurate apple watch is for HIIT Workout. The reality is that most fitness trackers out there work well for tracking regular workouts. But, when it comes to High-intensity workouts (HIIT), it becomes very challenging for them to accurately track the Heart-rate.

So, if you want to accurately track your Heart-rate in HIIT workouts, then you should invest in a good Chest Strap. I hope that this guide helped you find the answer to your question, and if you have any further questions, please let me know in the comment section below. Also, you can find the best Chest Straps for Apple watch on this list.