Cross-chain · Arbitrum One → Ethereum

Swap WETH from Arbitrum One to USDT on Ethereum

Swap WETH from Arbitrum One to USDT on Ethereum. Arbitrum WETH leaves the wallet and Tether USDT arrives on Ethereum.

Sell 0x82aF49447D8a07e3bd95BD0d56f35241523fBab1, WETH on Arbitrum One. Arbiscan should show that contract, and the wallet should be on chain id 42161, not Nova. Native ETH at the 0xEeee sentinel pays the fee and is not the sold asset. Tether on the receive side is 0xdAC17F958D2ee523a2206206994597C13D831ec7. Confirm it on Etherscan, chain id 1. Ethereum blocks are about 12 seconds. That is not how long the route takes.

Diagram for Swap WETH from Arbitrum One to USDT on Ethereum
WETH leaves Arbitrum One. USDT is what can arrive on Ethereum.

Tether on mainnet has history in the approve call

The receive contract 0xdAC17F958D2ee523a2206206994597C13D831ec7 is Ethereum USDT, six decimals, issued by Tether. You do not approve it to receive it. When you later spend it, some wallets complain because approve does not return a boolean. Look at the allowance on Etherscan if a follow-up looks frozen. That quirk belongs to the token, not to the question of whether the bridge credit happened.

The wrapped balance needs its own allowance

WETH will not move until 0x82aF49447D8a07e3bd95BD0d56f35241523fBab1 has allowance for the route, unless you already granted it. Native ETH cannot be approved in that ERC-20 sense, and this page is not asking it to be sold. If the allowance screen shows the sentinel address, you have selected the gas coin by mistake. Switch back to the WETH contract before you sign the permission.

Dollar output, ether input

WETH tracks ETH inside its own contract, but the trade into USDT is still a sale of ether exposure. The minimum USDT can change while you read. Refresh the quote if you step away. Fees on Arbitrum One stay in ETH, so a wallet with WETH and zero ETH cannot finish. Arbitrum One is the network that must hold both rows: wrapped coins to sell, and a little gas.

Not the route for Circle or for mainnet WETH

This page does not deliver Circle USDC, Maker DAI, or Ethereum WETH at 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2. It does not deliver native ETH on Ethereum. It is the wrong page if your balance is unwrapped ETH, if you are on Nova, or if you wanted Arbitrum Tether at 0xFd086bC7CD5C481DCC9C85ebE478A1C0b69FCbb9 to stay on Arbitrum One.

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 WETH from Arbitrum One to USDT on Ethereum?

Sell 0x82aF49447D8a07e3bd95BD0d56f35241523fBab1, WETH on Arbitrum One. Arbiscan should show that contract, and the wallet should be on chain id 42161, not Nova.

Is the USDT I receive the Arbitrum Tether contract?

No. Arbitrum Tether is 0xFd086bC7CD5C481DCC9C85ebE478A1C0b69FCbb9. This route can credit Ethereum Tether at 0xdAC17F958D2ee523a2206206994597C13D831ec7. Check that page on Etherscan. You spend WETH at 0x82aF49447D8a07e3bd95BD0d56f35241523fBab1 on Arbitrum One, chain id 42161. The two USDT deployments are not interchangeable. Confirm that address on the explorer before you sign, and refresh the quote if it has expired.

Why is native ETH still required?

Gas on Arbitrum One is native ETH, the sentinel 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE. WETH is the asset being sold, not the fee token. Without a little ETH, the approval of 0x82aF49447D8a07e3bd95BD0d56f35241523fBab1 cannot be mined. USDT on Ethereum will not refund that fee. Nova ETH is not the fee balance for chain id 42161.

Can I treat the WETH amount as a fixed USDT amount?

No. The route sells wrapped ether for Tether, and the price moves. Use the minimum on the quote as the floor. If the quote expires, that floor expires with it. Six decimals on Ethereum USDT do not change the need to reread the amount. About 12 seconds is an Ethereum block interval, not a price lock.

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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