Cross-chain · Avalanche C-Chain → Polygon
Swap USDC from Avalanche C-Chain to WETH on Polygon
Swap USDC from Avalanche C-Chain to WETH on Polygon. Circle USDC leaves the C-Chain, and Polygon WETH arrives on chain 137.
Spend 0xB97EF9Ef8734C71904D8002F8b6Bc66Dd9c48a6E on Avalanche C-Chain, chain 43114. Snowtrace shows Circle's USDC. AVAX pays the send. This is not the X-Chain. Receive 0x7ceB23fD6bC0adD59E62ac25578270cFf1b9f619 on Polygon. Polygonscan shows wrapped ether, an ERC-20. It is not POL. POL is the gas coin, marked 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE on chain 137. This route does not buy POL. It is not Ethereum WETH at 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2. You need POL already if you want to move the WETH after it lands.
Wrapped ether is not the fee coin
Circle in, not Tether, not USDC.e
Where the hop is unnecessary
POL before the wrapper can move
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 USDC from Avalanche C-Chain to WETH on Polygon?
Spend 0xB97EF9Ef8734C71904D8002F8b6Bc66Dd9c48a6E on Avalanche C-Chain, chain 43114. Snowtrace shows Circle's USDC. XAUConnect compares live routes and lets your own wallet sign.
Can Polygon WETH pay the next fee?
No. WETH at 0x7ceB23fD6bC0adD59E62ac25578270cFf1b9f619 is an ERC-20. Gas on chain 137 is POL, marked 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE in quotes. You need POL already on the account. AVAX spent on the C-Chain does not become that POL. Polygonscan can show WETH the wallet still cannot send. Bring POL before you try.
Is this Ethereum's canonical WETH?
No. Canonical WETH is 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2 on Ethereum, chain 1, where blocks are about 12 seconds. This route delivers 0x7ceB23fD6bC0adD59E62ac25578270cFf1b9f619 on Polygon, which you check on Polygonscan. The source is Circle USDC on the C-Chain, not the X-Chain. AVAX pays that send, and POL pays Polygon.
What if the app wanted POL?
Then this route is wrong. POL is the gas coin, not the ERC-20 you receive here. Choose the quote that delivers native POL. Staying in USDC, or switching only as far as Tether, is also a different page. Do not sign a WETH minimum if the order was a fee top-up.
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.
Continue exploring
Related markets, guides & networks
Next pages on this subject. Read them before you trade.
Swap PNG
Swap Pangolin (PNG) on Avalanche C-Chain. Avalanche C-Chain quotes on XAUConnect, with the fee and the minimum you recei
Swap AVAX
Swap Avalanche (AVAX) on Avalanche C-Chain. Avalanche C-Chain quotes on XAUConnect, with the fee and the minimum you rec
Swap USDC
Swap USD Coin (USDC) on Avalanche C-Chain. Avalanche C-Chain quotes on XAUConnect, with the fee and the minimum you rece
Swap USDT
Swap Tether (USDT) on Avalanche C-Chain. Avalanche C-Chain quotes on XAUConnect, with the fee and the minimum you receiv
How to swap stablecoins across chains
Swap stablecoins across chains on XAUConnect: native vs bridged USDC/USDT, gas on both sides, and when a same-chain rota
How to create a token on Base
Create a crypto token on Base with XAUConnect Launchpad: chain 8453, fixed-supply ERC-20, ETH gas, lock liquidity, paste
What is a token approval and why does it matter?
A token approval lets a contract spend your ERC-20s. It is a separate transaction from the swap, and an unlimited approv
Stablecoins: USDC vs USDT vs DAI
USDC is issued by Circle, USDT by Tether, and DAI is minted against collateral. Same peg, different contracts, and a bri
Build programmatically
Swap via API for bots and AI agents: quotes, builds, and cross-chain routes.