How to Add Sepolia Testnet to MetaMask
The best way to connect to the Sepolia Testnet with your MetaMask, Coinbase or alternative Web 3 wallet is through an EVM network aggregator like ChainList. Their platform collects the verified network ID and information for all mainnet and testnet layer 1 or layer 2 blockchains and allows users to easily connect to all of them with one single click.
Here is a simple guide to help you get started:
- Visit ChainList and connect your wallet.
- Click 'Include Testnets' and search for Sepolia.
- Find the Sepolia deployment you want to add and click 'Add to MetaMask'.

How to Get Sepolia Testnet Tokens
Once you have added Sepolia to your wallet, you will want to get free testnet tokens to test out applications on the network. We recommend using the Coinbase Sepolia Faucet, which allows users to input their wallet address and receive 0.1 Sepolia ETH for free. Please note that Sepolia ETH has no real value and is only used for testing purposes.
What is Sepolia?
Sepolia Testnet is a testing environment within the Ethereum ecosystem designed for developers and users to experiment with and test their decentralized applications (dApps) and smart contracts before deploying them on the Ethereum mainnet. It mimics the Ethereum mainnet's functionality but uses test tokens instead of real Ether (ETH) to allow for risk-free testing and development. Sepolia is one of the several Ethereum testnets available, and it plays a crucial role in ensuring the reliability and security of applications before they go live on the mainnet.
The Bottom Line
In conclusion, adding the Sepolia Testnet to your MetaMask Wallet is a straightforward process that enables developers and users to test their dApps and smart contracts in a risk-free environment. By using the ChainList platform, you can quickly connect to Sepolia and other testnets with ease.
Remember to acquire Sepolia test tokens via the Coinbase Sepolia Faucet to experiment with the network without any real-world financial implications. By leveraging the Sepolia Testnet, you can ensure the reliability and security of your applications before deploying them to the Ethereum mainnet.