Add a network to MetaMask

Pick a chain and press the button — MetaMask opens a confirmation with the correct chain ID, RPC endpoint and block explorer already filled in. Every endpoint below is a public, keyless node, last checked on 2026-09-14.

What this actually does. The button sends a standard wallet_addEthereumChain request. Your wallet shows you the parameters and nothing happens until you approve. It never touches your keys, your balances or your permissions.

Layer 1 networks

BNB Smart Chain

Binance-affiliated EVM chain. Home of BEP-20 tokens, including BSC-native USDT.

Chain ID 56BNB

Polygon PoS

Long-running Ethereum sidechain with very low fees and deep stablecoin liquidity.

Chain ID 137POL

Avalanche C-Chain

Avalanche’s EVM chain. Only the C-Chain is EVM — X-Chain and P-Chain are not.

Chain ID 43114AVAX

Core

Bitcoin-aligned EVM chain secured by merged mining with Bitcoin.

Chain ID 1116CORE

PulseChain

An Ethereum fork launched by Richard Heart, carrying a copy of Ethereum’s state.

Chain ID 369PLS

Gnosis Chain

Stable-gas chain where transaction fees are paid in a dollar-pegged token.

Chain ID 100xDAI

Cronos

Crypto.com’s EVM chain, used by its exchange ecosystem.

Chain ID 25CRO

Celo

Mobile-first chain, now an Ethereum L2, focused on payments.

Chain ID 42220CELO

Ethereum Mainnet

Already built into MetaMask — listed here for its parameters and as a fallback RPC.

Chain ID 1ETH

Layer 2 rollups

Arbitrum One

The largest Ethereum optimistic rollup by TVL. Gas is paid in ETH.

Chain ID 42161ETH

Arbitrum Nova

Arbitrum’s cheaper AnyTrust chain, aimed at gaming and social apps.

Chain ID 42170ETH

Base

Coinbase’s OP Stack rollup. Gas in ETH, direct funding from a Coinbase account.

Chain ID 8453ETH

OP Mainnet

The original OP Stack rollup and the reference implementation for the Superchain.

Chain ID 10ETH

Linea

Consensys’ zkEVM rollup — the chain MetaMask itself is built around.

Chain ID 59144ETH

zkSync Era

Matter Labs’ zkEVM rollup with native account abstraction.

Chain ID 324ETH

Scroll

Bytecode-equivalent zkEVM rollup.

Chain ID 534352ETH

Blast

Rollup that pays native yield on ETH and stablecoin balances.

Chain ID 81457ETH

Mantle

Modular L2 using EigenDA for data availability. Gas is paid in MNT, not ETH.

Chain ID 5000MNT

opBNB

BNB Chain’s OP Stack rollup with sub-cent fees.

Chain ID 204BNB

Testnets

Sepolia Testnet

testnet

The main Ethereum testnet for application developers.

Chain ID 11155111SepoliaETH

BNB Smart Chain Testnet

testnet

BSC test environment, used for BEP-20 contract testing.

Chain ID 97tBNB

Polygon Amoy Testnet

testnet

Polygon’s current testnet. It replaced Mumbai, which was shut down.

Chain ID 80002POL

Arbitrum Sepolia

testnet

Arbitrum’s test rollup, funded by bridging Sepolia ETH.

Chain ID 421614ETH

Base Sepolia

testnet

Base test rollup.

Chain ID 84532ETH

Linea Sepolia

testnet

Linea test network.

Chain ID 59141ETH

Chains you cannot add

These come up constantly, and most guides about them are wrong. MetaMask cannot connect to them at all — here is what to use instead.

Tron (TRC-20)

not EVM

Tron is not an EVM chain, so MetaMask cannot hold TRX or TRC-20 USDT.

Solana

not EVM

Solana is not EVM-compatible. MetaMask supports it only through a separate Solana account type in newer versions, not by adding a custom network.

Cardano

not EVM

Cardano uses a UTXO model and cannot be added to MetaMask as a custom network.

Aptos

not EVM

Aptos runs the Move VM, not the EVM, so MetaMask cannot connect to it directly.

Algorand

not EVM

Algorand is not EVM-compatible and has no chain ID MetaMask can use.

Common questions

Is it safe to add a network to MetaMask?

Adding a network only tells your wallet where to send requests. It does not give anyone access to your funds and cannot move anything on its own. The risk is a malicious RPC endpoint that shows you wrong balances or censors transactions, which is why every endpoint on this site is a public node published by the chain itself or by a known infrastructure provider.

Why does MetaMask say the chain ID does not match?

MetaMask asks the RPC endpoint which chain it serves and compares it with the chain ID being added. A mismatch means the RPC URL belongs to a different network, usually because it was copied from an out-of-date guide.

Can I add Tron, Solana or Cardano?

No. MetaMask implements the Ethereum JSON-RPC interface and only understands EVM chains with 0x addresses. Those three use entirely different address formats and protocols, so no custom-network setting will work.

My tokens disappeared after switching networks.

They did not move. Each network holds its own balances, and the same address exists on every EVM chain. Switch back to the network the tokens live on and they reappear.