Adding the Avalanche C-Chain to MetaMask unlocks seamless access to one of the fastest-growing ecosystems in decentralized finance (DeFi) and smart contract applications. As an Ethereum Virtual Machine (EVM)-compatible blockchain, Avalanche’s C-Chain allows users to interact with dApps, swap tokens, stake AVAX, and more—using familiar tools like MetaMask. This guide walks you through every step, from setup to troubleshooting, ensuring a smooth integration.
Understanding the Avalanche C-Chain
The Avalanche (AVAX) network is uniquely structured around three interoperable blockchains: the X-Chain for asset creation, the P-Chain for validators and staking, and the C-Chain (Contract Chain) for smart contracts. The C-Chain is where most user activity happens—think decentralized exchanges like Trader Joe, lending platforms like Benqi, or NFT marketplaces.
Because it supports EVM standards, developers can easily port Ethereum-based dApps to Avalanche with minimal changes. For users, this means compatibility with widely used wallets such as MetaMask, making onboarding fast and intuitive.
👉 Discover how connecting to high-speed EVM chains enhances your DeFi experience.
Prerequisites Before Adding the C-Chain
Before configuring MetaMask, ensure you have the following:
- The MetaMask browser extension installed and updated to the latest version.
- An existing wallet with a securely backed-up recovery phrase.
- Stable internet access to validate network details.
- A small amount of AVAX tokens for gas fees once connected.
⚠️ Never enter your seed phrase on any website or share it with anyone. MetaMask does not require external input of your private keys during network setup.
Keeping your extension up-to-date prevents bugs and ensures compatibility with newer EVM chains like Avalanche.
Avalanche C-Chain Network Parameters
To add the C-Chain manually, you'll need accurate network settings. These parameters allow MetaMask to communicate securely with Avalanche’s infrastructure.
Use the following verified values:
- Network Name: Avalanche C-Chain Mainnet
- RPC URL:
https://api.avax.network/ext/bc/C/rpc - Chain ID:
43114 - Currency Symbol:
AVAX - Block Explorer URL:
https://snowtrace.io/
These details are publicly maintained by the Avalanche team and are essential for error-free connectivity. Entering even a slightly incorrect Chain ID or RPC URL may lead to failed transactions or frozen interfaces.
Step-by-Step Guide: Add Avalanche C-Chain to MetaMask
Follow these steps to integrate the Avalanche C-Chain into your MetaMask wallet:
- Open your browser and click the MetaMask extension icon.
- Click your account name in the top-right corner, then select Settings.
- In the left sidebar, go to the Networks section.
- Scroll down and click Add Network.
- Choose Add a network manually.
Fill in each field precisely:
- Network Name: Avalanche C-Chain Mainnet
- New RPC URL: https://api.avax.network/ext/bc/C/rpc
- Chain ID: 43114
- Currency Symbol: AVAX
- Block Explorer URL: https://snowtrace.io/
- Click Save.
After saving, Avalanche will appear in your network list. You can now switch to it at any time by clicking the network dropdown at the top of the MetaMask interface.
👉 Learn how multi-chain wallets streamline cross-network DeFi strategies.
Testing Your Connection and Transferring AVAX
Once added, verify that everything works correctly:
- Switch MetaMask to Avalanche C-Chain Mainnet.
- Your balance may show zero initially—this is normal if no AVAX has been sent yet.
To test connectivity:
- Send a small amount of AVAX from an exchange or another wallet to your MetaMask address.
- Track the transaction on Snowtrace, Avalanche’s official block explorer.
- Confirm that the balance updates in your wallet after confirmation.
Successful receipt of AVAX confirms full integration. If delays occur, refresh MetaMask or double-check that you're on the correct network.
Common Issues and Troubleshooting Tips
Even with correct setup, some users face issues. Here are frequent problems and solutions:
❌ "Unknown Network" or RPC Error
Ensure the RPC URL is entered exactly as provided. Typos or trailing spaces can break connectivity. Try removing and re-adding the network.
❌ Transaction Stuck or Failing
This often results from insufficient gas fees. While Avalanche typically has low fees, congestion can increase costs temporarily. Adjust gas settings manually if needed.
❌ Balance Not Showing Up
Wait a few minutes and refresh MetaMask. If still missing, confirm:
- You’re viewing the correct network (Avalanche C-Chain).
- The correct wallet address received the funds.
❌ Chain ID Rejected
Make sure you entered 43114 without quotes, commas, or spaces. Some browsers auto-format numbers—double-check input fields.
If all else fails, reset your account in MetaMask settings (under Advanced > Reset Account), then re-add the network.
Frequently Asked Questions (FAQ)
Can I use the same MetaMask address on both Ethereum and Avalanche C-Chain?
Yes. Since both networks are EVM-compatible, your public address and private key remain consistent across chains. However, always verify the active network before sending funds—sending AVAX to an Ethereum address on the wrong chain risks permanent loss.
What should I do if I accidentally send AVAX to my Ethereum network in MetaMask?
Funds sent to the wrong network are generally unrecoverable unless you control both chains’ private keys. Always double-check the selected network before confirming transactions.
Is there a mobile version of MetaMask that supports Avalanche C-Chain?
Yes. The MetaMask mobile app fully supports custom networks. Navigate to Settings > Networks > Add Network and enter the same parameters used on desktop.
Are there alternatives to MetaMask for connecting to Avalanche?
Yes. Wallets like Trust Wallet, Coinbase Wallet, and Core Wallet also support Avalanche C-Chain. They offer similar functionality but vary in UI design and security features.
Why is Chain ID 43114 important?
Chain ID prevents replay attacks between networks. Using 43114 ensures transactions are only valid on Avalanche’s mainnet—not Ethereum or testnets.
Do I need AVAX in my wallet before adding the network?
No. You can add the network without holding AVAX. However, you’ll need AVAX to pay gas fees for interactions like swaps or contract approvals.
Final Thoughts
Integrating the Avalanche C-Chain into MetaMask is a straightforward process that opens doors to high-speed transactions, low fees, and a thriving ecosystem of dApps. By following this guide, you ensure secure and accurate configuration—avoiding common pitfalls that could compromise funds or access.
Whether you're exploring DeFi, collecting NFTs, or staking AVAX, having a properly configured wallet is your foundation for success in Web3.
👉 Start exploring EVM-compatible blockchains with confidence today.