How Does Apple Watch Calculate Calories?

It is much easier to keep track of your fitness or body composition goals when you have a calorie count that is easily accessible.

How Does Apple Watch Calculate Calories?

The Apple Watch calorie calculator is right on your wrist, and you will be able to see how many calories you are burning with ease. 

However, there has been a lot of questioning regarding how accurate this calorie calculator actually is, and how exactly it works.

In this article, we will discuss everything you need to know about how Apple Watch calculates calories, and more! So, if this is of interest to you, then read on! 

How Does Apple Watch Calculate Calories? 

When you set up an Apple Watch, you are required to give details such as your gender, height, weight, and age.

After you do this, the apple watch will begin to track your heart rate and activity through a variety of sensors throughout the day.

Then, with this information and by use of various algorithms, Apple will create an estimate of how many calories you burn throughout the day

On top of this, you will be able to specify what activity or workout you are doing so your Apple Watch will be able to take that into account when calculating how many calories you are burning and give you a more accurate reading.

This is because the Apple Watch can find the correct data sources and sensors for the specific type of workout – cycling, walking, etc after you give the information! 

The result? A specified amount of calories is given after each workout that is accurate and will help you keep track of your goals. 

Is The Calculation Of Calories On An Apple Watch Accurate?

While the Apple Watch uses data and sensors to provide the specific number of calories you have burned after a workout, it is important to note that the data is an estimation, not a result with 100% accuracy.

Of course, outside of any totally controlled environment, it is difficult to accurately calculate the number of calories you have burned, so it is totally normal that Apple Watch’s results are estimations. 

How Does Apple Watch Calculate Calories?

However, Apple Watches are excellent tools and the technology that they use, provided you have entered in the correct information, makes the estimates that they give ones that are reliable and provide great results. 

However, we understand that if you have fitness or body composition goals in mind, then you will want these results to be as accurate as possible.

So, we have compiled a list of tips to help you get more accurate calorie-burning results from your Apple Watch. 

Enable Wrist Detection On The Apple Watch 

Wrist detection is what permits your Apple Watch to read your heart rate in the background, such as when you are resting or walking.

With wrist detection, you will also allow the device to calculate your Stand progress, which will be advantageous in reaching your goals. 

To start wrist detection on your Apple Watch, you can do the following:

  • Make sure your Apple Watch is paired with your iPhone
  • Once paired, open the Apple Watch app 
  • Click the tab called “My Watch”
  • Scroll down until you see “Passcode.” Hit it
  • Find the “Wrist Detection” button and slide it so it moves  and activates

From here, wrist detection will be working on your Apple Watch and you will be able to use it to get a more accurate calorie count. 

Make Sure You Choose Your Workout On The Apple Watch 

As previously mentioned, Apple Watch enables you to choose a workout and will track your calories based on your activity during that workout.

So, if you choose the correct workout, then your Apple Watch will be more likely to give you an accurate result. 

For example, if you are cycling, then click “cycling” on the watch and will get a more accurate calorie calculation than if your watch was on the “walking” setting. 

Make Sure The Apple Watch Data Is Updated 

The data points on your Apple Watch can heavily influence your calorie calculations.

So, you need to make sure that the data is accurate for the calorie calculations to be accurate. In order to keep your data up-to-date, you can do the following:

  • Make sure your Apple Watch is paired with your iPhone 
  • Once paired, open the Apple Watch app 
  • Click the tab called “My Watch”
  • Scroll down until you see “Health”. Click it
  • Then, click “Health Details” 
  • Now, you need to hit “Edit” and edit whatever details you need to to make them more accurate 

Check The Fit Of The Apple Watch 

In order to accurately estimate your calories, your Apple Watch needs to use data from the heart sensor.

So, you need to ensure that you are wearing your watch correctly in order for accurate data to be sent across.

It is best to wear it so it fits snugly, directly at the top of your wrist. 

Calibrate Your Apple Watch 

One of the best things you can do to ensure the accuracy of your Apple Watch is to calibrate it!

This will ensure that your device knows your stride and fitness level. You should also ensure you set up your pace and distance data. 

Final Thoughts 

If you have set fitness or body composition goals, then it is good to know how your Apple Watch is tracking your calories so you can accurately work towards your goals.

Unless you are in a controlled environment, it will not be possible to give a 100% accurate calorie calculation. 

However, Apple Watch uses excellent technology to give you as accurate of an estimate as possible.

In order for Apple Watch to track your calories, you must enter in personal data such as age, weight, etc.

You can also change the activity setting on the device so it will be able to closely monitor your activity and heart rate with its sensors, and this will give you a burned calorie estimate. 

We hope this article told you everything you needed to know about how your Apple Watch calculates calories.

Jenna Priestly
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