Cross-chain · Base → Polygon
Swap ETH from Base to USDC on Polygon
Swap ETH from Base to USDC on Polygon. Native ETH leaves Base, and Circle's native USDC arrives on Polygon chain 137.
You sell the gas coin on Base, chain 8453, written as 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE. Basescan shows the account, not a token page. Leave enough ETH for the fee. There is no approval on native ETH. You receive Circle USDC at 0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359 on Polygon, chain 137. Polygonscan is the explorer. That contract is native USDC, 6 decimals, not bridged USDC.e at 0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174. Gas after arrival is POL.
Native USDC, not the bridged copy
Selling L2 gas on purpose
POL is the leftover problem
Skip the page when the dollar is wrong
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 Base to USDC on Polygon?
You sell the gas coin on Base, chain 8453, written as 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE. Basescan shows the account, not a token page.
Is this Polygon USDC the bridged USDC.e?
No. Bridged USDC.e is 0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174. This route delivers Circle's native USDC at 0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359, which you check on Polygonscan. Both can be called USDC in a wallet. The app you are funding decides which address it will accept. Read that address on Polygonscan before you fund the market.
Do I approve the ETH I am selling?
No. Native ETH on Base is the gas coin, marked 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE, and it is sent rather than approved. Keep a remainder on chain 8453 for the fee. If the wallet asks you to approve WETH, the input selected is the wrapper, and that is a different route.
What pays gas after the USDC arrives on Polygon?
POL, the native coin on chain 137. USDC cannot pay it, and the ETH you sold on Base does not travel as POL. Put a little POL on the account before you try to move the dollars. Polygonscan will show the USDC even when the wallet cannot send it.
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 BRETT
Swap Brett (BRETT) on Base. Base quotes on XAUConnect, with the fee and the minimum you receive shown before you sign. Y
Swap ETH
Swap Ether (ETH) on Base. Base quotes on XAUConnect, with the fee and the minimum you receive shown before you sign. You
Swap USDC
Swap USD Coin (USDC) on Base. Base quotes on XAUConnect, with the fee and the minimum you receive shown before you sign.
Swap AERO
Swap Aerodrome (AERO) on Base. Base quotes on XAUConnect, with the fee and the minimum you receive shown before you sign
What happens after you generate a crypto token
After you generate a crypto token: publish the address, lock LP, test buy/sell on XAUConnect, handle clones, and don’t f
What is MEV and how does sandwiching work?
MEV is value taken from the order of transactions. A sandwich buys before your swap and sells after it, and your slippag
Build programmatically
Swap via API for bots and AI agents: quotes, builds, and cross-chain routes.