Cross-chain · Arbitrum One → Ethereum

Swap ETH from Arbitrum One to USDC on Ethereum

Swap ETH from Arbitrum One to USDC on Ethereum. Native ETH leaves Arbitrum One and Circle USDC arrives on Ethereum.

The asset you spend is native ETH on Arbitrum One, written as 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE. That sentinel means the gas coin, not WETH. The same balance also pays the fee, so the quote cannot use every wei. What you can receive is Circle USDC at 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48. Confirm it on Etherscan. Arbitrum One is chain id 42161, not Nova. Look at the spend on Arbiscan. Ethereum is chain id 1, and a block there is about 12 seconds, which is not a bridge timer.

Diagram for Swap ETH from Arbitrum One to USDC on Ethereum
ETH leaves Arbitrum One. USDC is what can arrive on Ethereum.

The gas coin is the asset you are selling

On this route the thing you sell and the thing that pays the fee are the same native ETH balance on chain id 42161. If you type your full balance, the transaction has nothing left for gas and the wallet should refuse it. Leave a cushion. WETH at 0x82aF49447D8a07e3bd95BD0d56f35241523fBab1 is not this balance. If the portfolio shows wrapped ether only, this quote is looking at the wrong row and will not see those coins.

Circle USDC on mainnet is six decimals

0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 is Circle's USDC on Ethereum. Six decimals, fiat-backed by Circle, not Maker DAI and not Tether. Etherscan is the check. There is no USDC.e story on Ethereum mainnet the way there is on Arbitrum. Still compare the full address, because a token can print the letters USDC without being Circle. The receive account must be able to hold ERC-20s on chain id 1.

You do not bridge the ETH ticker through

Native ETH on Arbitrum One is not delivered as native ETH on Ethereum by this page. The output is a dollar token. Your Arbitrum ETH balance falls. An Ethereum USDC balance can rise. They are different assets on different chain ids. How cross-chain bridges work covers why a shared ticker does not mean a shared balance, which matters here because both networks use ETH for gas.

Wrong when you wanted ETH to stay ETH

Pick another page if the goal is WETH at 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2, or if you wanted native ETH on Ethereum at the sentinel. This output is Circle USDC only. It is also the wrong page if you are holding WETH rather than gas ETH, if the wallet is on Nova, or if you only needed USDC inside Arbitrum One and had no reason to touch Ethereum.

Legal

Risk disclosure

XAUConnect is a non-custodial swap aggregator. Digital assets are volatile and may lose value rapidly. Content on this page is educational and not investment advice. Verify every contract address on the official block explorer before approving a transaction.

Frequently asked questions

What is the best way to swap ETH from Arbitrum One to USDC on Ethereum?

The asset you spend is native ETH on Arbitrum One, written as 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE. That sentinel means the gas coin, not WETH.

Why can't I enter my entire ETH balance?

Because 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE on Arbitrum One is both the asset sold and the fee coin. The swap and any approval-like costs still need ETH left in the account. Spend less than the full balance. WETH is a separate contract, 0x82aF49447D8a07e3bd95BD0d56f35241523fBab1, and is not a backup for this fee.

Is the USDC I receive Circle's contract?

Yes, if the receive address is 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 on Ethereum. That is Circle USDC, six decimals. Confirm it on Etherscan, chain id 1. Tether's USDT and Maker's DAI are different contracts. If a dapp asks for one of those, this route has delivered the wrong stablecoin for that dapp.

Does Arbitrum Nova use this same ETH balance?

No. Nova is not chain id 42161. ETH on Arbitrum One does not sit on Nova, and it does not sit on Ethereum either. This page starts on Arbitrum One and can credit Circle USDC on Ethereum. If the wallet header says Nova, change the network before you sign. Arbiscan for One will not match a Nova transaction.

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Open the swap page with this cross-chain route pre-selected, then connect your wallet on the source chain to quote and execute. You keep the keys.

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