Cross-chain · Polygon → Ethereum

Swap WETH from Polygon to ETH on Ethereum

Swap WETH from Polygon to ETH on Ethereum. Polygon WETH leaves Polygon. Native ETH is what can arrive on Ethereum. This is not an unwrap button. Polygon has no native ETH to unwrap.

You sell 0x7ceB23fD6bC0adD59E62ac25578270cFf1b9f619. You buy the gas label 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE, which on chain id 1 means ETH you can spend on fees. It is not WETH at 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2. Polygonscan shows the token debit. Etherscan shows native ETH. Polygon uses POL, not this WETH, to pay the source.

Diagram for Swap WETH from Polygon to ETH on Ethereum
WETH leaves Polygon. ETH is what can arrive on Ethereum.

Unwrap locally and you are still on Polygon

A Polygon unwrap, if a wrapper even offers one, cannot credit chain id 1. Gas there is POL. This route is the one that can end in Ethereum ETH. If you only wanted a different token on Polygon, do not bridge.

The receive can pay mainnet fees

Native ETH from the 0xEeee label can pay later Ethereum transactions. WETH cannot until unwrapped. If a contract demanded 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2 specifically, this route is the wrong output. ETH is not WETH.

You still spend POL to leave

0x7ceB23fD6bC0adD59E62ac25578270cFf1b9f619 does not pay chain id 137. Keep POL for the approval and the swap. Blocks around 2 seconds are the source chain only. Ethereum blocks around 12 seconds are not a bridge finish time.

Same nickname, two contracts

People see WETH and ETH and assume one coin. The sell is a Polygon ERC-20. The buy is native ether on mainnet. Etherscan will not list the Polygon contract as the balance that increased. Match the wallet that signed.

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 Polygon to ETH on Ethereum?

You sell 0x7ceB23fD6bC0adD59E62ac25578270cFf1b9f619. You buy the gas label 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE, which on chain id 1 means ETH you can spend on fees.

Is this the same as wrapping on Ethereum?

No. Wrapping on Ethereum stays on chain id 1 and moves between ETH and 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2. This route starts with Polygon WETH at 0x7ceB23fD6bC0adD59E62ac25578270cFf1b9f619 and can finish as native ETH. Polygonscan and Etherscan are both required. ETH is not WETH. A local wrap on Ethereum mainnet is a separate action.

Do I need ETH on Ethereum before I start?

You need POL on Polygon to send. The ETH credit is what this route can create, so a prior mainnet balance is not required for the credit to exist. You do need the right address on chain id 1. Etherscan shows that native credit, not a WETH token line.

What if I wanted WETH to stay wrapped on Ethereum?

Then this page is wrong. It pays native ETH via 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE. The wrapped contract is 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2 and is a different quote. Sign this one only if spendable gas on Ethereum is the point. Choose the wrapped output only when a contract demands WETH instead of gas.

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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