How does Google Fit know my weight?


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Page last updated: 28/09/2022

How does Google Fit know my weight?

In this guide, we will talk about how Google Fit knows my weight, what is Google Fit, setting Google Fit, adding an activity, logging your weight with Zero and some additional considerations when using the app. 

How does Google Fit know my weight?

If you want to know how Google Fit knows your weight, here we have the answer. Google Fit won’t automatically know your weight unless you have added it for tracking purposes. To add a new weight measurement simply go to the app, at the bottom right, tap add (+) and add weight. Enter the weight amount and at the top right tap Save. 

Moreover, you can see your weight changes over time if you open the app and at the bottom left tap Home. Scroll down and tap Weight, at the top, adjust the time frame for the graph and you will see some dots which represent specific weight measurements that you have entered. Finally, you will also see a trend line, which is the average of recent weight data meant to give you a better idea of how your weight changed over time. 

What is Google Fit?

Google Fit can be considered Apple’s direct competitor, although other good options also compete with Apple Health such as Huawei health and Samsung Health. Google Fit uses the sensors built-in to your devices to automatically recognize activities such as walking, biking and running. 

Additionally, you can use the app to track your fitness goals and weight-loss journey. Google Fit is available to be downloaded through the Play Store. However, it comes preloaded on Android wear watches and can be accessed from Google’s website. 

Setting Google Fit

Google Fit has a very simple interface and some might say too simple. However, there isn’t much you need to do to set it up. After downloading the app, simply agree to Google Terms of Service and hit Next to grant Google access to actionable information and location history. If permissions are not granted, you may have complications using the app and tracking activities in the future. 

The location data will let you see your progress throughout the data and the location of where you were exercising. However, to set up on the web, just go to the Google Fit Website and select your Google account. Finally, agree to the company’s terms of use and you’ll be set.

Adding an Activity

Many people would rather just stop eating or dieting instead of exercising. However, exercising with your phone seems to be very useful because many of us hardly leave our phones aside, it is almost like an extension of us. If you feel identified with what we have just said then, this might interest you.

As we have mentioned before, Google Fit uses the sensors in your phone to track activities such as walking. However, there are many activities you could track and for this, just tap on the app and the Home screen select add activity to add workouts you have done with or without your phone. From there, you can choose the activity of your preference and add it to your profile.

Logging your Weight with Zero

Many people have been increasingly interested in using weight loss apps so they can manage their weight. This is why the Zero app has new tools to help you keep track of your weight, set weight goals and visualize your progress. 

If you would like to get started, input your weight, head to the history tab where you will receive a prompt to sync either with Apple Health or Google Fit. In our case, when you sync with Google Fit, your existing weight history will appear in Zero, helping you visualize the impact of fasting on your weight over time.

How does Google Fit know my weight?


Tracking weight is very important for many users because it allows them to see the changes over time and it can be especially motivating to see the resulting weight loss amount. However, if you are on a weight loss journey, don’t be discouraged if at first, the results are not what you have been expecting. 

After you have started to track your weight, you can navigate to the History Tab and scroll down until you find the Weight graph. Here you can tap the ‘Log Weight’ button, enter the date, time and weight amount. Finally, tap ‘Save Weight’ and your new weight should appear in your weight graph.


We all know how difficult it is to keep track of what is going on with your life, children, family, job, etc. and besides, having to worry about your weight. However, ‘Zero’ makes it easier for you since it reminds you to weigh-in at the same time every day or as little as once per week.

Simply navigate to the History Tab and scroll down until you see the weight graph. Locate the ‘set reminder’ button and from there:

  • Tap on the days of the week you’d like to weigh-in. When a day is highlighted (red), you’ll know that it’s selected.
  • Choose the time of day you’d like to weigh-in
  • Tap ‘Set Alert’

Finally, to edit an existing weigh-in reminder, simply follow the same steps as above, then edit the day and/or time you’d like to weigh in. To remove an existing reminder, tap ‘Delete alert’.

Setting Goals

Setting goals must be one of the most important things that you must do before starting your weight loss journey. Knowing how much you would like to lose can help you imagine yourself after losing weight and getting closer to your weight loss goal can become very motivating.

To set a weight goal, you can navigate to the History tab, scroll down to the weight graph and tap on the ‘Set Goal’ button. Select your desired weight goal, tap on Save Changes’ to confirm.

Deleting a weight entry 

If you have added a weight entry by mistake, here are two ways to delete a weight entry:

  • Go to the History tab and tap the ‘See more’ button above the weight graph. Next, tap See all data and from there, select the weight you’d like to remove.
  • To remove the weight entry that has synced on Google fit just open the Google Fit app and tap on ‘Weight’. Select the weight entry you’d like to edit. Next, choose the new weight and tap ‘Save’. 

Why is this blog about How does Google Fit know my weight important?

As we have discussed how Google Fit knows your weight, we mentioned that Google Fit won’t automatically know your weight unless you input the information manually. However, it is a very good option if you would like to track your weight loss journey and any changes to your weight over time. Seeing the information displayed there can become encouraging and motivating. 

Please feel free to leave any comments or thoughts about the content of this article!

Frequently Asked Questions (FAQs) about How does Google Fit know my weight

How does Google fit calculate calories?

Google Fit calculates calories burned through a combination of your physical activity, your gender, weight and height. It will show an estimate of total calories burned and includes your basal metabolic rate (BMR), not just calories you burned in your activity. 

Is Google Fit accurate?

Google fit supports all popular fitness apps/devices which could be an input for data and they might be highly accurate. If you are using google fit only then: if you turn on GPS with high accuracy it’s 99 to 100% accurate. Otherwise, the result varies (shows more steps than usual) by 1-20%

How do I delete my weight on Google fit?

If you want to delete your weight on Google Fit after you have logged your weight on a connected app, on your phone open the app and tap Profile Settings Delete your data Weights. Confirm that you want to delete the data and you are all set.

How does Google fit count steps?

Google Fit count steps with the help of the built-in sensors on your device (smartphone or wearable). Open the Google Fit app on your phone and tap on the number of the steps directly below the avatar, above the charts and graphs. Next, you will see the details of the current activities and you can tap on the Week tab at the top of that screen to change the view; daily total views will be listed below the chart.

How does Google fit know I’m walking?

When you’re walking, running or biking throughout the day, Google Fit will automatically detect these activities using your phone or watch sensors such as the accelerometer and GPS to estimate the number of Heart Points you earn.