How to bridge ETH from Ethereum to Arbitrum using MetaMask?

Network Configuration Setup

1. Open MetaMask extension and click the network selector located at the top of the interface.

2. Select “Add Network” and choose “Add a network manually” to input Arbitrum One parameters.

3. Enter the following values: Network Name as Arbitrum One, RPC URL as https://arb1.arbitrum.io/rpc, Chain ID as 42161, Currency Symbol as ETH, and Block Explorer URL as https://arbiscan.io.

4. Confirm the inputs and save the configuration. The network dropdown should now display “Arbitrum One” as an available option.

Wallet Preparation and Asset Verification

1. Ensure your MetaMask wallet is connected to the Ethereum Mainnet before initiating any bridging action.

2. Verify that your wallet holds sufficient ETH to cover both the bridging amount and the Layer 1 gas fee required for the deposit transaction.

3. Double-check the wallet address displayed in MetaMask matches the one used on previous Ethereum transactions to prevent accidental fund loss.

4. Confirm that no pending transactions are active in the wallet queue, especially those related to prior bridge attempts or contract interactions.

Initiating the Deposit Transaction

1. Navigate to the official Arbitrum Bridge at https://bridge.arbitrum.io and connect your MetaMask wallet.

2. Select ETH from the token dropdown menu under the “Deposit” section.

3. Input the exact amount of ETH you wish to transfer into the L1 field and click “Deposit”.

4. Approve the transaction in MetaMask by reviewing the gas estimate, confirming the recipient address (0x0000…0000), and signing with your private key.

5. Wait for the Ethereum transaction to be confirmed—this typically takes between 30 seconds and 5 minutes depending on network congestion.

Asset Availability on Arbitrum

1. After the L1 transaction confirmation, switch MetaMask’s network to Arbitrum One using the network selector.

2. Refresh the MetaMask interface to trigger automatic balance synchronization with the Arbitrum blockchain.

3. Observe the ETH balance update in real time; funds usually appear within 10–60 minutes after deposit initiation.

4. Confirm successful receipt by checking the transaction on https://arbiscan.io using the same wallet address.

Frequently Asked Questions

Q: Why does my ETH not show up immediately after switching to Arbitrum One?A: Arbitrum requires finality confirmation from Ethereum’s consensus layer. Delays occur due to block production intervals and cross-layer state synchronization—not wallet or bridge failure.

Q: Can I bridge tokens other than ETH using the same Arbitrum Bridge interface?A: Yes. The bridge supports ERC-20 tokens deployed on Ethereum Mainnet, provided they have been officially whitelisted and verified on Arbitrum’s token list.

Q: What happens if I send ETH to the Arbitrum Bridge contract address directly via a custom transaction?A: Funds sent outside the official bridge interface will be irretrievable. Only deposits initiated through the canonical bridge UI or approved SDK integrations are processed correctly.

Q: Is it possible to use a hardware wallet like Ledger with the Arbitrum Bridge?A: Yes. MetaMask supports Ledger devices when connected via USB and unlocked. Ensure Ledger Live has Ethereum app open and MetaMask is set to “Ledger” mode before connecting.