Fitbit Band Size Guide: How To Measure Wrist Before Buying Fitbit?

Fitbit Band Size Guide

You might be wondering how to measure the wrist before you buy a Fitbit band or a Fitbit smartwatch. This can be a basic issue. Previously, I have been questioning Fitbit’s accuracy for ages. It turns out that I have been wearing it incorrectly and using the band size that was not meant for me.

This is exactly why you need to measure the wrist before you buy a Fitbit watch or a Fitbit smart band. So, how do you measure the wrist size? 

For a fact, the Fitbit has maintained a Fitbit sizing tool, and you can take it into account to measure the wrist. Similarly, you will have to know your wrist size and how to use it correctly on your wrist. This blog will help you to make these things clear in your mind! 

Why Do I Need to Measure My Wrist Before Buying A Fitbit Band?

Firstly, you will have the question in mind why do I need to measure the wrist before buying a Fitbit? You might think that it is easier to just get a size that you think is good for you. However, Fitbit provides three basic wrist sizes that are small, large, and X large. 

Wrist Size

How can you know whether your wrist size is small or large? Your wrist may seem normal sized for your body, but some people have a smaller wrist than yours as well. So, you have to consider the fact that you might have a larger or smaller sized wrist even though they seem normal to you.


The next thing is you have to wear a fitness band almost all the time. Moreover, it is used for a longer period, even while you are sleeping for sleep tracking. 

This is why you need to consider it to be comfortable enough for your wrist.

If your wrist size is wrong, then you will feel irritability in your skin. Besides, it can also be too tight or too loose, causing your skin trouble in breathing.

Accuracy Of Activity Tracking

Fitness bands and smartwatches have to track your activities through the pedometers and pure pulse techniques. Besides, many other sensors work constantly with your body.

For this reason, your fitness tracker must be the right size, such that it allows your skin to breathe while tracking your activity correctly.

If the tracker is too tight, then you will be uncomfortable, while if it is too loose, you will lose track of your activities, and they will show a wrong count. 

Would you want it to affect your overall workout schedule as well as your goals eventually? Of course not. Likewise, the sad part is that the reason for your purchase will not be fulfilled.

Majorly, the heart rate sensors are sensitive in such a case. For it to work accurately, you will require to have the band of your size.

What Are Sizes That Fitbit Band Has To Offer?

Fitbit offers you exactly two standard sizes broken down into three categories. Likewise, the sizes are small, large, and extra-large Fitbit. Though, you will find very fewer options for an extra-large Fitbit since they are recent updates made to the band.

It is normal for people to get a small-sized fitness band/ smartwatch or a larger one depending on their gender or measuring their wrist size. 

Which Fitbit Band Size Matches My Wrist Size?

It is essential to know which Fitbit size matches your wrist such that you get the accurate measurement. 

Since there are many plus points of having the accurate sized Fitbit device, you have to know the circumference of your wrist before you buy a Fitbit.

Mostly, it is seen that women have smaller wrist sizes and men have either large or extra-large wrist sizes. In contrast to this popular opinion, it might not be the case always.

Fitbit generally has an adjustable band for the ease of getting a better grip. Moreover, you might leave a little room for the band to wiggle back and forth.

Furthermore, you can always use a band size bigger than what you expect and use the adjustable band to your wrist.

How Do I Know Which Size Fitbit Band Should I Buy? 

You can use various methods to check out which Fitbit size you need to buy. These comparison tables and the measuring methods help you to know what size exactly works better for you.

Comparison Of Sizes Table

You have three different sizes to choose from, as mentioned before. Let’s check the table of sizes so that we can compare it after knowing the size of our wrist. 

Wrist Size Inches Centimeter
Small Size 5.5 inches–6.5 inches 14.0 cm–16.5 cm
Large Size 6.5 inches–7.7 inches 16.5 cm–19.6 cm
X Large Size 7.7 inches–8.9 inches 19.6 cm–22.6 cm

After measuring your wrist, please come back to the table above and check which category do you fall in. 

For example, if your wrist size is 6 inches, you fall in the category of small wrist size, so you need to buy a small wrist Fitbit band. Similarly, if your wrist size is 19 cm, then you fall in the category of large wrist size. Hence, you need to buy a large-sized Fitbit band. 

Moreover, there are three different methods that you can take into consideration to measure your wrist size. They are mentioned below for your ease:

Fitbit Sizing Tool

Fitbit provides you a certain sizing tool that makes it easier for you to know which size you need. Basically, you will need a printer and a piece of paper. It is also called the paper method. 

You simply have to print out a page consisting of the Fitbit sizing tool. Then, you have to cut out the sizing band with a pair of scissors. Finally, you wrap it around your wrist to know which size you should order in case of Fitbit. 

If you are looking for any other bands, then this measurement may not come in handy. So, this is only meant for Fitbit devices. Though if you use this sizing tool to get some other fitness bands, it might give you an idea about which size you should order.

The link for the Fitbit sizing tool is given below:

Traditional Methods Of Measuring Wrist

Let us be real. You might not have a printer lying at your house, or you might not want to waste the ink of your printer. In such a case, there are some traditional methods that you can use to get the job done. 

Tape Method

The first one is the tape measure. In this measure, you just have to take a tape and measure your wrist. For this, wrap around the tape and write down the size of your wrist in inches. 

After that, compare the measurement with the sizes we have mentioned in the above table. Order the one that matches your size.

String Method

The next one is the string method. You can say that this is an alternative method which is easier and faster. In contrast to the previous method, it is not useful if you do not have a tape at home. 

In this case, you need to use the string method. Firstly, grab a piece of string and wrap it around your wrist. 

Secondly, cut it out and compare its length to a ruler. 

Thirdly, write down your measurement and then check it with the table given above. 

Now you undeniably know what size your Fitbit should be, and you will have no problem in the accuracy of the trackers.

Pro tip: If your wrist size is near to the end zone, then it is a good option to choose the bigger one. 

Although you might find it easier to associate yourself with the smaller one, you can always adjust the straps better if you have the larger one, but you cannot adjust a smaller Fitbit band to change into a larger size.

Sizes Available In Fitbit Bands

From the following table, you can get an idea about what the available sizes are in order to choose the one that fits best for you! Most fitness bands and smartwatches by Fitbit are available only in small and large bands. However, Fitbit Inspire HR and Inspire series provide bands for the extra-large wrists as well.

If you want an extra-large fitness band size, you do not need to worry! There are plenty of outsourcing bands you can get from Amazon.

Fitbit Bands Price Size
Fitbit Charge 4 $129.95 Small: Fits wrist size of 5.5″ – 7.1″ in circumference

Large: Fits wrist size of 7.1″ – 8.7″ in circumference

X-large: Not available

Fitbit Charge 4 Special Edition $149.95 Small: Fits wrist size of 5.5″ – 7.1″ in circumference

Large: Fits wrist size of 7.1″ – 8.7″ in circumference

X-large: Not available

Fitbit Inspire 2 $99.95 Small: Fits wrist size of 5.5″ – 7.1″ in circumference

Large: Fits wrist size of 7.1″ – 8.7″ in circumference

X-large: Fits wrist size of 8.1″ – 9.3″ in circumference

Fitbit Sense $329.95 Small: Fits wrist size of 5.5″ – 7.1″ in circumference

Large: Fits wrist size of 7.1″ – 8.7″ in circumference

X-large: Not available

Fitbit Versa 3 $229.95 Small: Fits wrist size of 5.5″ – 7.1″ in circumference

Large: Fits wrist size of 7.1″ – 8.7″ in circumference

X-large: Not available

Fitbit Versa 2 Special Edition $199.95 Small: Fits wrist size of 5.5″ – 7.1″ in circumference

Large: Fits wrist size of 7.1″ – 8.7″ in circumference

X-large: Not available

Fitbit Versa 2 $179.95 Small: Fits wrist size of 5.5″ – 7.1″ in circumference

Large: Fits wrist size of 7.1″ – 8.7″ in circumference

X-large: Not available

Fitbit Ace 2 $49.95 One Size: Fits wrist size of 4.6″ – 6.6″ in circumference

Frequently Asked Questions

What Is The Best Fitbit Band For A Small Wrist?

As you know that Fitbit comes in three different sizes, there is always an extra question about what is the best band for a small wrist. 

This is because it is always harder to choose a smaller band that looks attractive on your hand as well as fits the display well on your rest.

Some bands I have the right size of the wrist, but the display is bigger. And I know how much unattractive it can look since I have always struggled with having the right sized band for my small wrist. 

So here are the ones that I recommend you to try in Fitbit devices which will surely love.

Fitbit Charge 4

Activity Tracking: Yes (GPS/ Heart Rate Monitor/ Sleep as well as Swim Tracking)
Waterproof: Yes
Battery: Up to 7 days
Connection: Android/ iOS/ Windows
Price: $199.64

The latest fitness band that Fitbit launched is the Fitbit charge 4. It looks attractive on your small wrist and has a pretty amazing display. 

Moreover, you will love the sensors in this fitness band with extra features such as oximeters. This will help you to know your blood oxygen levels with the SPO2 sensor in hand. 

Furthermore, it adds up the sleep tracking, heart rate monitoring, steps tracking, and much more exciting features. Even, it has GPS tracking for your ease of locating places.

Fitbit Versa 2

Display: Yes
Activity Tracking: Yes (GPS/ Heart Rate Monitor/ Sleep as well as Swim Tracking)
Waterproof: Yes
Battery: Up to 6+ days
Connection: Android/ iOS/ Windows
Price: $199.5

Fitbit Versa 2 is a smartwatch that is one of a kind. It fits perfectly for your small wrist and gives you undeniably the best features.

Not only does it have the qualities that are mentioned above in the Fitbit charge 4 but it also adds features like Fitbit pay, women’s health tracking, etc. 

Additionally, it works well with Alexa. How cool is that? This is the smartwatch you are looking for if you have a small wrist as well as easy operation through the voice-enabled operation.

Fitbit Inspire HR

Display: Yes
Activity Tracking: Yes (Heart Rate Monitoring as well as Sleep Tracking)
Waterproof: Yes
Battery: Up to 5 days
Connection: Android/ iOS
Price: $69-$76

Because it has a slim design and the best features in one, Fitbit Inspire HR is one of the most spoken smart bands. Moreover, you can track your calorie burns, sleep, steps, and other activities.

You will also get reminders to move every hour which makes you more active throughout the day. What’s more? Not only does it give you these reminders or just the numbers that you achieved but you can also celebrate your goals by reaching them.

Moreover, it is hard to argue to have an affordable fitness band with such attractive features.

Should My Fitbit Band Be Tight Or Loose? 

Your Fitbit band should neither be loose nor tight. Moreover, it should fit just right. Since Fitbit’s come in adjustable band straps, you can find the right spot by experimenting with the various spots.

Besides, you should also know how to wear the Fitbit bands. This means that the Fitbit devices work best when you wear them one finger above the wrist bone normally. 

However, if you are exercising, you should wear it two fingers above the wrist bone and a little tighter than the usual so that it can catch those heart sensors properly.

On the other hand, the band must have a little space for the wrist to be breathable enough such that it slides back and forth easily on your wrist. To conclude, the band must be adjusted on a trial and error basis as per your ease.

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