How to Add Polygon to MetaMask
RobTheCoins · Updated Sep 2026 · 2 min read
Quick answer: To add Polygon to MetaMask, access your wallet, navigate to settings, add the Polygon network details, and save the configuration.
Before you start
- Ensure you have the latest version of MetaMask installed.
- Have your MetaMask wallet ready and unlocked.
- Know your MetaMask password and have access to your seed phrase.
- Understand the irreversibility of blockchain transactions.
How to Add Polygon to MetaMask: step by step
1. Open MetaMask
Launch the MetaMask application or browser extension and enter your password to unlock your wallet.
2. Access Network Settings
In the top-right corner of MetaMask, click on the network dropdown menu, which currently displays ‘Ethereum Mainnet’ or another network.
3. Add Network Manually
Scroll to the bottom of the network list and click on ‘Add Network’. This will open a new tab with network configuration options.
4. Enter Polygon Network Details
Fill in the following details for the Polygon network: Network Name: Polygon Mainnet, New RPC URL: https://polygon-rpc.com/, Chain ID: 137, Currency Symbol: MATIC, Block Explorer URL: https://polygonscan.com/.
5. Save the Network
After entering the details, click on the ‘Save’ button. MetaMask will validate the information and add the Polygon network to your network list.
6. Switch to Polygon Network
Once saved, switch to the Polygon network by selecting it from the network dropdown menu.
7. Verify the Configuration
Ensure that the network has been successfully added by checking the network name and your MATIC balance if you have any.
Fees and how long it takes
Adding a network to MetaMask is typically free and takes only a few minutes. The time may vary depending on your internet connection and the MetaMask server load.
Fees for transactions on the Polygon network are generally lower than on Ethereum, but they can fluctuate based on network congestion.
Stay safe
- Always double-check the network details before saving to avoid connecting to the wrong network.
- Be cautious of phishing sites mimicking MetaMask or Polygon network configurations.
- Never share your seed phrase or private keys with anyone, including through MetaMask support.
- Test with a small amount of MATIC first when making transactions to ensure everything is working correctly.
- Remember that on-chain transfers are irreversible, so ensure all details are correct before proceeding.
If something goes wrong
Network not appearing in the list — Ensure you have entered the correct network details and try refreshing the page or restarting MetaMask.
Unable to connect to RPC URL — Check your internet connection and verify the RPC URL is correct. If the issue persists, try using an alternative RPC URL.
Transaction failing on Polygon — Ensure you have sufficient MATIC for gas fees and that the network is not experiencing high congestion.
Doing this as part of trading, income, or a disposal? See how it may be taxed in Tax by country and the taxable-events section — information, not advice.
Frequently asked questions
Can I add Polygon to MetaMask on mobile?
Yes, you can add the Polygon network to MetaMask on mobile by accessing the network settings and entering the network details manually.
Is there a fee to switch between networks?
No, switching between networks in MetaMask is free. However, you may incur fees when making transactions on the network you switch to.
What if I enter the wrong network details?
If you enter incorrect details, MetaMask will not be able to connect to the network. You can edit the network details or remove and re-add the network.
Can I use Polygon network for other tokens?
Yes, the Polygon network supports a variety of tokens besides MATIC. You can add these tokens to your MetaMask wallet and interact with them on the Polygon network.