To find your Steam ID, open your Steam account and click on your Steam profile image in the top right corner. In the drop-down menu, the second item will be ‘Account Details’ — click on it. You will see a page with information about your account, and under the large inscription "Your nickname account," there will be your Steam ID (16 figures). To use the CS:GO inventory value checker, simply copy these numbers and paste them into the corresponding window on the Profilerr website.