Cross-chain · Ethereum → Polygon
Swap ETH from Ethereum to WETH on Polygon
Swap ETH from Ethereum to WETH on Polygon. Someone who needs wrapped ETH on chain 137 spends native ETH on Ethereum and receives Polygon WETH.
Wrapping on Ethereum is a deposit into 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2, and the WETH stays on mainnet. This route spends native ETH, marked 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE, and delivers 0x7ceB23fD6bC0adD59E62ac25578270cFf1b9f619 on Polygonscan. Those are different contracts. Leave ETH for gas on chain id 1. The received token cannot pay POL on chain id 137. Depositing ETH into the mainnet WETH contract is a separate action and leaves you on chain id 1. This pair's receipt is only visible on Polygonscan after you switch to chain id 137. Hold POL there or the wrapped token cannot be transferred.
A local wrap does not reach Polygon
Native in, ERC-20 out
Keep a fee on both chains
Pools that name WETH on Polygon
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 Ethereum to WETH on Polygon?
Wrapping on Ethereum is a deposit into 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2, and the WETH stays on mainnet. This route spends native ETH, marked 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE, and delivers 0x7ceB23fD6bC0adD59E62ac25578270cFf1b9f619 on Polygonscan.
How is this different from wrapping ETH?
Wrapping deposits native ETH into 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2 and stays on Ethereum. This route delivers Polygon WETH at 0x7ceB23fD6bC0adD59E62ac25578270cFf1b9f619 on Polygonscan. The ticker matches. The chain and the contract do not. Use the wrap when the next signature is on chain id 1.
Do I approve ETH before sending?
No approval is required for native ETH. It is recorded as 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE. You still must leave enough ETH to pay chain id 1 gas, or the send fails. Etherscan shows the native balance falling. Polygonscan shows the WETH balance rising after you switch networks.
Can Polygon WETH pay gas?
No. Gas on chain id 137 is POL. The WETH can arrive and sit until POL is added. Blocks are about 2 seconds once a transaction can pay that fee. If you needed the gas coin itself, choose a route whose output is native POL.
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.
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