Cross-chain · Base → Arbitrum One

Swap ETH from Base to ARB on Arbitrum One

Swap ETH from Base to ARB on Arbitrum One. Native ETH leaves Base, and the ARB governance token arrives on Arbitrum One.

You spend Base ETH, chain 8453, placeholder 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE. Basescan shows the account balance. Leave enough to pay the fee. There is no ERC-20 approval. You receive ARB at 0x912CE59144191C1204E64559FE8253a0e49E6548 on chain 42161. Arbiscan is the explorer. ARB is not ETH and cannot pay gas. WETH at 0x82aF49447D8a07e3bd95BD0d56f35241523fBab1 is not the output. This is Arbitrum One, not Nova. You are selling ether exposure for a governance token.

Diagram for Swap ETH from Base to ARB on Arbitrum One
ETH leaves Base. ARB is what can arrive on Arbitrum One.

A volatile token, not a fee top-up

People sometimes buy ARB because they want to vote or to use a market that pairs it. The price can move while the bridge is in progress, and the minimum on the quote is your floor. If that floor is a bad trade for the ETH you give up, do not sign. Nothing here promises how long the bridge takes or what ARB will be worth when it shows on Arbiscan.

You still owe One some ETH

ARB cannot pay for its own transfer. Chain 42161 wants ETH. The ETH you sold was on Base and does not reappear as gas. Fund One separately. If you cannot, the governance token will sit idle. The placeholder 0xEeee means ETH on whichever chain the wallet has selected, not ARB.

Wrong when you wanted ether to remain ether

If the goal was ETH on Arbitrum One, this page sells it into ARB and you should stop. If the goal was WETH, USDC, or USDT, stop. If the goal was a Base wrap, stop. If the wallet is on Nova, you are looking at the wrong network even after a correct fill. WBTC is not a stand-in, and it is not native bitcoin.

Where the debit and the credit live

Debit: Basescan, native ETH down, chain 8453. Credit: Arbiscan, ARB token up, chain 42161. Trade on Arbitrum is the destination note and it means One. Do not resubmit because the hashes differ. Keep a Base ETH remainder so the first transaction can be mined.

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 Base to ARB on Arbitrum One?

You spend Base ETH, chain 8453, placeholder 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE. Basescan shows the account balance.

Is ARB the gas token on Arbitrum One?

No. Gas is ETH. ARB at 0x912CE59144191C1204E64559FE8253a0e49E6548 is the governance token, which you verify on Arbiscan. The native coin is written as 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE in quotes. You need that ETH on chain 42161 before ARB can move. This route does not include it. Add ETH on One or the ARB balance cannot be sent.

Does this fill on Arbitrum Nova?

No. The chain id is 42161, Arbitrum One, not Nova. A Nova wallet can look empty when Arbiscan already shows ARB. Switch to One. The ETH you sold is the Base gas coin, chain 8453, and that debit is on Basescan only. Nova never becomes the destination by waiting.

I wanted to move ETH, not sell it. What should I do?

Do not sign. A route that delivers native ETH on Arbitrum One keeps the gas coin as the gas coin. This page delivers ARB instead. If you only needed ETH on Base, you do not need a bridge at all. Read the output symbol on the quote and stop when it says ARB.

Live execution

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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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