ETH (Ether) is the native currency of Ethereum and its Layer-2 networks including Arbitrum. While Polygon uses POL as its gas token, wrapped ETH (WETH) is available on Polygon and can be bridged to native ETH on Arbitrum.

Why Bridge ETH to Arbitrum?

Arbitrum requires ETH to pay gas fees. If you want to interact with Arbitrum dApps — such as GMX, Camelot, Pendle, or any Arbitrum-native protocol — you need ETH on Arbitrum. Bridging ETH from Polygon is one of the fastest ways to fund your Arbitrum wallet.

WETH on Polygon vs ETH on Arbitrum

On Polygon, ETH exists as wrapped ETH (WETH), an ERC-20 token. When you bridge WETH from Polygon to Arbitrum, the bridge automatically unwraps it and delivers native ETH on Arbitrum. You do not need to manually unwrap.

Bridge Fees for ETH

Bridging ETH from Polygon to Arbitrum involves a small gas fee on Polygon (paid in POL) plus the bridge protocol fee. The total cost is typically less than $0.20, making it far cheaper than bridging ETH directly from Ethereum mainnet.

Step-by-Step Guide

Connect your wallet, ensure you are on the Polygon network, select WETH or ETH as the token, choose Arbitrum One as the destination, enter the amount you want to bridge, approve and confirm the transaction, then wait for confirmation which usually takes 5–30 seconds.

Gas Funds for Arbitrum

Remember that you need ETH on Arbitrum to pay for any further transactions. If this is your first time using Arbitrum, bridge a slightly larger amount to ensure you have enough ETH to cover future gas fees on the network.