Cross-chain · Arbitrum One → Ethereum

Swap WETH from Arbitrum One to DAI on Ethereum

Swap WETH from Arbitrum One to DAI on Ethereum. Arbitrum WETH leaves the wallet and Maker DAI arrives on Ethereum.

Spend WETH at 0x82aF49447D8a07e3bd95BD0d56f35241523fBab1. That contract is on Arbitrum One, chain id 42161, and Arbiscan is the place to read it. It is not native ETH. The fee still uses the gas sentinel 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE. Maker DAI at 0x6B175474E89094C44Da98b954EedeAC495271d0F is the receive contract, eighteen decimals, on Ethereum. Etherscan is the check. Chain id 1, blocks about every 12 seconds. None of that sets a bridge deadline.

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

Eighteen decimal DAI against wrapped ether

WETH uses eighteen decimals, and so does Maker DAI, but that coincidence is not a one-for-one redeem. You are selling ether exposure for a stablecoin. The amounts can look numerically close only when ETH's price is near a round dollar figure, and they will not stay lined up. Read DAI on the quote. Confirm 0x6B175474E89094C44Da98b954EedeAC495271d0F on Etherscan so you know you are counting Maker units, not a six-decimal stablecoin.

Issuer check before the wallet label

Maker issues this DAI. Circle does not. Tether does not. A portfolio group called stables can hide the issuer. If the app you are funding lists Circle USDC at 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48, stop. This route will not produce that contract. The same is true for Ethereum Tether at 0xdAC17F958D2ee523a2206206994597C13D831ec7. The label DAI has to match the Maker address, not a bridged imitation on another chain.

Allowance sits on Arbitrum WETH

Approve 0x82aF49447D8a07e3bd95BD0d56f35241523fBab1 on chain id 42161 if the allowance is empty. Pay the approval in native ETH. Do not approve DAI. Do not approve WETH on Ethereum, because you are not spending that contract. How to bridge assets between chains puts the permission on the chain you leave, which is the pattern here.

Wrong for a plain unwrap or a USDC payout

Unwrapping WETH on Arbitrum One would return native ETH on chain id 42161 and stop there. This page does not do that. It also does not pay native ETH or WETH on Ethereum. If your goal is Circle USDC, Tether, or a gas balance on mainnet, pick another route. If the wallet is on Nova, the WETH contract on Arbiscan for One is not the balance you are viewing.

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 DAI on Ethereum?

Spend WETH at 0x82aF49447D8a07e3bd95BD0d56f35241523fBab1. That contract is on Arbitrum One, chain id 42161, and Arbiscan is the place to read it.

Who issues the DAI this route can deliver?

Maker. The contract is 0x6B175474E89094C44Da98b954EedeAC495271d0F on Ethereum, and Etherscan is where you confirm it. It is not Circle USDC and it is not Tether USDT. You spend Arbitrum WETH at 0x82aF49447D8a07e3bd95BD0d56f35241523fBab1. If a protocol's allowlist names a different stablecoin, this arrival will not qualify. Confirm the address on the explorer before you sign.

Do equal decimals mean one WETH becomes one DAI?

No. Both tokens use eighteen decimals, so the base units look similar in size. The trade is still a sale of wrapped ether for DAI at the quoted price, minus fees. One WETH is not redeemable for one DAI inside Maker by using this page. Read the minimum DAI. Refresh the quote if it expires.

Is the gas sentinel the token being sold?

No. 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE is native ETH, used here only as gas on Arbitrum One. The sold contract is WETH, 0x82aF49447D8a07e3bd95BD0d56f35241523fBab1. Chain id 42161 must be selected, not Nova. If you hold only unwrapped ETH, this quote cannot see a WETH balance to sell. Confirm the address on the explorer before you sign.

Live execution

Trade on XAUConnect

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.

Swap cross-chainExplore markets

Continue exploring

Related markets, guides & networks

Next pages on this subject. Read them before you trade.

Networks
Tokens
Guides
Articles

Build programmatically

Swap via API for bots and AI agents: quotes, builds, and cross-chain routes.

Developer quickstart