Adding the Arbitrum network to your MetaMask wallet unlocks access to faster, lower-cost Ethereum-based transactions and decentralized applications (dApps). As one of the leading Layer 2 scaling solutions, Arbitrum enhances Ethereum’s performance while maintaining its security. This guide walks you through the complete process—whether you're using the browser extension or mobile app—and explains why integrating Arbitrum with MetaMask benefits your crypto experience.
Why Add Arbitrum Network to MetaMask?
Integrating Arbitrum into your MetaMask wallet offers several compelling advantages:
- Access high-performance dApps: Use decentralized finance (DeFi) platforms, NFT marketplaces, and gaming dApps built on Arbitrum with minimal fees.
- Lower transaction costs: Enjoy significantly reduced gas fees compared to Ethereum Mainnet.
- Faster transaction finality: Benefit from rapid confirmation times thanks to Arbitrum’s rollup technology.
- Seamless asset management: Bridge and manage ETH and ERC-20 tokens across networks without switching wallets.
With these benefits, it's no surprise that Arbitrum has become a go-to ecosystem for efficient blockchain interaction.
👉 Discover how easy it is to start using top blockchain networks today.
How to Add Arbitrum Network to MetaMask – Browser Extension
You can add Arbitrum One to MetaMask in two ways: manually or via Chainlist. Both are secure and widely used.
Option 1: Add Arbitrum via Chainlist (Recommended)
Chainlist simplifies network integration by pre-configuring settings.
Step 1: Open Chainlist
Visit the official Chainlist website. Connect your MetaMask wallet when prompted.
Step 2: Search and Select Arbitrum One
Use the search bar to find “Arbitrum One.” Ensure you select the correct network—Arbitrum One (Chain ID: 42161).
Step 3: Click “Add to MetaMask”
After selecting the network, click “Add to MetaMask”. A pop-up will appear in your wallet requesting confirmation. Approve the connection twice if needed.
Once confirmed, MetaMask automatically switches to the Arbitrum network.
Option 2: Manual Setup in MetaMask
For full control over network details, manual entry ensures accuracy.
Step 1: Open MetaMask Extension
Launch your MetaMask browser extension and log in.
Step 2: Click “Add Network”
In the top-center dropdown menu (default: Ethereum Mainnet), click it and select “Add Network”.
Step 3: Enter Arbitrum Network Details
Fill in the following fields exactly:
- Network Name: Arbitrum One
- New RPC URL:
https://arb1.arbitrum.io/rpc - Chain ID:
42161 - Currency Symbol: AETH
- Block Explorer URL:
https://arbiscan.io
⚠️ Double-check each field before proceeding. Incorrect data may lead to lost funds or failed transactions.
Step 4: Save Changes
Click “Save” to finalize. MetaMask will switch to Arbitrum One automatically.
How to Add Arbitrum Network to MetaMask – Mobile App
The mobile version requires manual setup since Chainlist doesn’t support direct mobile integration.
Step 1: Open MetaMask Mobile App
Launch the app and log in. The interface supports both light and dark modes.
Step 2: Navigate to Settings
Tap the hamburger menu (three lines) in the top-left corner, then go to Settings > Networks > Add Network.
Step 3: Enter Network Information
Input the same details as above:
- Network Name: Arbitrum One
- RPC URL: https://arb1.arbitrum.io/rpc
- Chain ID: 42161
- Currency Symbol: AETH
- Block Explorer URL: https://arbiscan.io
Step 4: Save Configuration
Tap “Add” at the bottom. The network will now appear in your list and become active immediately.
👉 Start exploring fast, low-cost blockchain transactions now.
How to Switch Between Networks in MetaMask
Switching between Ethereum Mainnet, Arbitrum, or other added networks is simple:
- Open MetaMask (browser or mobile).
- Click or tap the current network name at the top.
- Select your desired network from the list.
No additional steps are required—your wallet adjusts instantly.
About Arbitrum
Arbitrum is a Layer 2 scaling solution designed to improve Ethereum’s efficiency. It uses optimistic rollups to batch transactions off-chain and submit them to Ethereum for final verification. This approach drastically reduces gas fees and increases throughput while inheriting Ethereum’s robust security model.
Developers deploy standard EVM-compatible smart contracts on Arbitrum without modification, making it easy to migrate dApps. Today, major protocols like Uniswap, GMX, and Aave operate on Arbitrum, contributing to its growing ecosystem.
With billions of dollars in total value locked (TVL), Arbitrum ranks among the most trusted Ethereum scaling platforms.
About MetaMask Wallet
MetaMask is a non-custodial cryptocurrency wallet available as a browser extension (Chrome, Firefox, Brave, Edge) and mobile app (iOS, Android). It enables users to store, send, receive, and swap Ethereum and ERC-compatible tokens securely.
Key features include:
- Built-in token swap functionality
- dApp browser integration
- NFT support across major marketplaces
- Hardware wallet compatibility
As the gateway to DeFi and Web3, MetaMask allows seamless interaction with blockchain applications without managing private keys directly.
👉 Learn how top wallets integrate with powerful blockchain tools.
Frequently Asked Questions (FAQ)
Can I lose funds by adding Arbitrum to MetaMask?
No—adding a network doesn’t expose your funds. However, always verify RPC URLs and avoid suspicious websites that prompt network changes.
Do I need a new wallet address for Arbitrum?
No. Your Ethereum address remains the same across networks. You can use the same private key or seed phrase on Arbitrum.
Why does gas cost less on Arbitrum than Ethereum?
Arbitrum processes transactions off-chain and only posts summaries to Ethereum, reducing congestion and computational load—hence lower fees.
Can I bridge ETH to Arbitrum?
Yes. Use official bridges like Arbitrum Bridge to transfer ETH and ERC-20 tokens from Ethereum to Arbitrum securely.
Is Arbitrum safe?
Yes. It inherits Ethereum’s security and has undergone multiple audits. However, always research individual dApps before interacting.
Will adding Arbitrum affect my existing tokens?
No. Tokens on Ethereum remain unaffected. You must bridge assets intentionally to use them on Arbitrum.
Final Thoughts
Adding Arbitrum to MetaMask is a straightforward process that opens doors to a faster, cheaper Ethereum experience. Whether you’re trading on DeFi platforms, collecting NFTs, or exploring new blockchain innovations, leveraging Layer 2 solutions like Arbitrum enhances both performance and affordability.
By following this guide, even beginners can confidently configure their wallets and begin exploring one of the most dynamic ecosystems in Web3.
Always ensure you’re using verified sources when entering network details—and remember, your private keys stay with you. With MetaMask and Arbitrum together, you’re well-equipped for the future of decentralized finance.