How to Use the Polygon Network on Metamask on Chrome Extension

  1. 1.
    First, make sure you have the latest version of the Metamask extension installed on your browser.
  2. 2.
    Open Metamask and click on the Ethereum Mainnet button (top-middle bar) between the fox icon and the circled account icon.
  3. 3.
    From the dropdown, select the "Add network" tab at the bottom.
  4. 4.
    In the Settings page, click on the "Add" next to "Polygon Mainnet" under "Popular custom networks."
  5. 5.
    On the pop-up menu, click "Approve" button add the Polygon Network to your Metamask. Then skip to Step 9 below.
  6. 6.
    If you do not see "Polygon" listed there, click on "Add a network manually" at the bottom.
  7. 7.
    In the "Add a network manually" dialog box, enter the following information:
    • Network Name: Polygon
    • New RPC URL:
    • Chain ID: 137
    • Symbol: POLY
    • Block Explorer URL:
  8. 8.
    Click on the "Save" button to add the Polygon Network to your Metamask.
  9. 9.
    You should now see the Polygon Network listed in the "Networks" tab. To switch to the Polygon Network, click on it and then click on the "Save and Close" button.
  10. 10.
    You can now use Metamask to interact with the Polygon Network, such as sending and receiving transactions or interacting with untrading App.