To log your weights in kilograms (kgs) instead of pounds (lbs), you can update your user settings under your profile in the app.
- In the app, press on the profile picture in the upper right corner of the HOME app screen. 
- Press 'Settings' 
- Toggle on the setting to use KGS and press 'Save' as shown in the screenshot below: 
Here is a video tutorial demonstrating these steps.

