In this guide, we outline how to use the new MetaMask Bridge to move assets between the 4 supported networks. Transfer your tokens cross-chain between Ethereum (ETH), Polygon (MATIC), Avalanche (AVAX) and BNB Chain.

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Table of Contents

What is MetaMask Bridge?

The MetaMask Bridge is a new product by MetaMask that is available on their Portfolio application. It is a bridge aggregator that helps you find the best route among popular bridges to move your token from one network to another.

The bridging application currently supports cross-chain swaps between 4 networks that include ETH, MATIC, AVAX and BNB. It is likely that they will continue to add other Ethereum Virtual Machine (EVM) compatible networks as the new product moves out of its Beta release.

How to Use MetaMask Bridge

MetaMask Wallet users are able to access the MetaMask Bridge directly through the application. You can follow the simple guide below that was developed by ConsenSys who are the team behind the MetaMask app.

How does the MetaMask Bridge Work?

The MetaMask Bridge is an aggregator that routes your transaction through the lowest cost bridge that is deemed secure by the team.  Transactions are facilitated by 0x relayers who help to find the best match and help to execute the order.

The application is designed to be simple and easy to use so that anyone can make a cross-chain transaction without having to worry about the technical details. You can read more details about the technical specifications here.

Bridging Ethereum to Polygon on MetaMask
MetaMask ETH to Polygon Bridge.

MetaMask Bridge Fees

The MetaMask Bridge is currently charging zero fees while the product is in Beta. They have said that they will introduce a fee once the product adds more EVM networks like Optimism and Arbitrum, however they have not given any specific details.

Final Thoughts

The MetaMask Bridge is arguably the safest and easiest way to bridge your tokens between ETH, MATIC, AVAX and BNB. The platform aggregates your bridging transfer to find the best possible route to minimize costs and enhance user experience. We recommend using this method to bridge between the aforementioned networks for the lowest cost, least friction and tightest slippage.