Add a network to MetaMask
Verified RPC URLs, chain IDs, symbols and explorers for every major EVM chain — with a one-click add button that hands the details straight to MetaMask.
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EVM networks
| Network | Chain ID | RPC URL | Symbol | Explorer | |
|---|---|---|---|---|---|
| Ethereum | 1 | https://ethereum-rpc.publicnode.com | ETH | etherscan.io | |
| Polygon | 137 | https://polygon-rpc.com | POL | polygonscan.com | |
| BNB Smart Chain | 56 | https://bsc-dataseed1.bnbchain.org | BNB | bscscan.com | |
| Arbitrum One | 42161 | https://arb1.arbitrum.io/rpc | ETH | arbiscan.io | |
| OP Mainnet | 10 | https://mainnet.optimism.io | ETH | optimistic.etherscan.io | |
| Base | 8453 | https://mainnet.base.org | ETH | basescan.org | |
| Avalanche C-Chain | 43114 | https://api.avax.network/ext/bc/C/rpc | AVAX | snowscan.xyz | |
| Fantom Opera | 250 | https://rpc.ftm.tools | FTM | ftmscan.com | |
| Gnosis | 100 | https://rpc.gnosischain.com | XDAI | gnosisscan.io | |
| zkSync Era | 324 | https://mainnet.era.zksync.io | ETH | explorer.zksync.io | |
| Linea | 59144 | https://rpc.linea.build | ETH | lineascan.build | |
| Scroll | 534352 | https://rpc.scroll.io | ETH | scrollscan.com | |
| Mantle | 5000 | https://rpc.mantle.xyz | MNT | mantlescan.xyz | |
| Blast | 81457 | https://rpc.blast.io | ETH | blastscan.io | |
| Polygon zkEVM | 1101 | https://zkevm-rpc.com | ETH | zkevm.polygonscan.com | |
| Celo | 42220 | https://forno.celo.org | CELO | celoscan.io | |
| Moonbeam | 1284 | https://rpc.api.moonbeam.network | GLMR | moonbeam.moonscan.io | |
| Cronos | 25 | https://evm.cronos.org | CRO | explorer.cronos.org | |
| PulseChain | 369 | https://rpc.pulsechain.com | PLS | ipfs.scan.pulsechain.com | |
| Kava | 2222 | https://evm.kava.io | KAVA | kavascan.com | |
| Metis Andromeda | 1088 | https://andromeda.metis.io/?owner=1088 | METIS | andromeda-explorer.metis.io | |
| Mode | 34443 | https://mainnet.mode.network | ETH | explorer.mode.network | |
| Zora | 7777777 | https://rpc.zora.energy/ | ETH | explorer.zora.energy | |
| Taiko | 167000 | https://rpc.mainnet.taiko.xyz | ETH | taikoscan.io | |
| BOB | 60808 | https://rpc.gobob.xyz | ETH | explorer.gobob.xyz | |
| World Chain | 480 | https://worldchain-mainnet.g.alchemy.com/public | ETH | worldscan.org |
Parameters sourced from the community EVM chain registry. The add button opens MetaMask's own confirmation dialog — nothing is changed until you approve it there.
What "adding a network" actually does
MetaMask ships knowing about Ethereum. Every other EVM chain — Polygon, Arbitrum, Base, BNB Smart Chain and hundreds more — has to be told to your wallet manually, because they are separate networks that happen to speak the same language.
Adding one stores five pieces of information: a display name, an RPC URL (where your wallet sends requests), a chain ID (the network's unique number), the native currency symbol, and a block explorer URL. Nothing is created, nothing moves, and your private keys never leave the extension. The same seed phrase controls the same address on every EVM chain you add.
Adding a network manually
If you prefer not to use the one-click button, or you are on mobile:
- Open MetaMask and click the network selector at the top left.
- Choose Add a custom network (in older versions: Settings → Networks → Add network → Add a network manually).
- Fill in the five fields from the table above: Network name, New RPC URL, Chain ID, Currency symbol, Block explorer URL.
- Click Save. MetaMask switches to the new network and shows your balance on it.
Three mistakes worth avoiding
- Pasting an RPC URL from a search result or a Discord message. This is the one real risk in the whole process. A hostile RPC cannot steal your keys, but it can lie to you about balances and transaction outcomes. Use the chain's published endpoint.
- Expecting your tokens to appear. Adding Base does not move your Ethereum USDC to Base. Bridging is a separate, deliberate transaction.
- Sending to an exchange on the wrong network. Every EVM chain shares your address format, so a transfer to the right address on the wrong chain looks valid and is usually unrecoverable. Confirm the network on the deposit screen, every time.
Before moving anything, it is worth checking what the transaction will cost — our gas tracker shows live fees in dollars for Ethereum and Bitcoin.
Frequently asked questions
How do I add a network to MetaMask?
Two ways. The fast one: find the network in the table above and click Add to MetaMask — the extension opens its own confirmation dialog with the details pre-filled, and you approve it. The manual one: open MetaMask, click the network dropdown at the top left, choose Add a custom network, and copy the network name, RPC URL, chain ID, currency symbol and block explorer URL from the table. Both produce exactly the same result.
Is it safe to add a custom network to MetaMask?
Adding a network does not give anyone access to your funds. What it does do is tell your wallet where to send RPC requests, and a malicious RPC endpoint can show you false balances or route your transactions oddly. So the rule is simple: only add networks whose RPC URL comes from a source you trust. Every endpoint in the table above is the chain's own public RPC as published in the community chain registry, not a third-party proxy.
What is a chain ID?
A unique number identifying an EVM network — 1 for Ethereum, 137 for Polygon, 8453 for Base. It is what stops a transaction signed for one chain being replayed on another. If MetaMask says "this chain ID is already in use", a network with that ID is already configured under a different name.
Can I add Solana, Cardano or Bitcoin to MetaMask?
Not as a custom EVM network — those chains are not EVM-compatible, so there is no RPC URL and chain ID to enter. MetaMask has added native multichain support for Solana in recent versions, and Bitcoin and Cardano need a different wallet entirely (or a MetaMask Snap, which is a separate install). Any site offering you an "RPC URL for Bitcoin" to paste into MetaMask is a scam.
Why does the network I added show a zero balance?
Almost always because your tokens are on a different chain. Adding a network does not move anything — your assets stay wherever they were. To use them on the new chain you have to bridge them across, which is a separate transaction with its own risk and cost. Check the address on the chain's block explorer (linked in the table) to confirm what is actually there.
What do I do if the RPC URL stops working?
Public RPC endpoints get rate-limited or retired. If transactions start failing or balances stop loading, edit the network in MetaMask settings and swap the RPC URL for another published endpoint for that chain. The chain ID, symbol and explorer stay the same — only the RPC changes.