Cross-chain · Polygon → Ethereum
Swap WETH from Polygon to USDC on Ethereum
Swap WETH from Polygon to USDC on Ethereum. Bridged WETH leaves Polygon. Circle USDC is what can arrive on Ethereum. Unwrapping on Polygon is a different job and does not create this USDC.
The token sold is 0x7ceB23fD6bC0adD59E62ac25578270cFf1b9f619. The token bought is 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48. Gas on chain id 137 is POL, not this WETH. Gas on chain id 1 is ETH, not this USDC. Polygonscan shows the WETH debit. Etherscan shows Circle. How cross-chain bridges work is the distinction between a local unwrap and a real hop.
Polygon WETH is not Ethereum WETH
POL pays, even while you sell WETH
USDC on Ethereum still needs ETH later
USDC.e thinking will mislead you
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 USDC on Ethereum?
The token sold is 0x7ceB23fD6bC0adD59E62ac25578270cFf1b9f619. The token bought is 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48. XAUConnect compares live routes and lets your own wallet sign.
Can I unwrap this WETH on Polygon and call it Ethereum ETH?
No. Unwrapping or selling on Polygon stays on chain id 137, where the gas coin is POL. Ethereum ETH is a different ledger. This route sells 0x7ceB23fD6bC0adD59E62ac25578270cFf1b9f619 and can credit Circle USDC at 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48. Etherscan is the credit. Polygonscan is only the debit. Match both contracts before you sign.
Does the USDC pay Ethereum gas?
No. Circle USDC is not ETH, and ETH is not WETH. You need ETH already on chain id 1 to move 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 after it arrives. About 12 second blocks describe Ethereum, not the bridge. Keep that ETH separate from the trade. Fund that ETH before you need to move the USDC.
What if I hold POL and think it is WETH?
POL is native gas, labeled 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE, and it is not 0x7ceB23fD6bC0adD59E62ac25578270cFf1b9f619. This page cannot spend POL as the principal. If WETH is missing, you are on the wrong route. Use a POL quote instead, and keep some POL for fees. A POL balance is not a WETH balance.
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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