Cross-chain · Ethereum → Polygon
Swap USDC from Ethereum to USDT on Polygon
Swap USDC from Ethereum to USDT on Polygon. Traders who need Tether on Polygon spend Circle USDC on Ethereum and receive the PoS USDT.
This page is for a chain 137 wallet that must hold Tether. A mainnet pool is the right tool when you only want to rotate Circle dollars into Tether on Ethereum. You approve 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 on Etherscan, Circle USDC, 6 decimals. You receive 0xc2132D05D31c914a87C6611C10748AEb04B58e8F on Polygonscan, also 6 decimals. That is not Circle's native USDC on Polygon. Gas to send is ETH on chain id 1, about 12 seconds a block. Polygon then charges POL. Switch the wallet to chain id 137 before you look for the Tether on Polygonscan.
Stay on Ethereum to flip the stable
Polygonscan is where the USDT lives
ETH first, POL second
Who the PoS USDT is for
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 Ethereum to USDT on Polygon?
This page is for a chain 137 wallet that must hold Tether. A mainnet pool is the right tool when you only want to rotate Circle dollars into Tether on Ethereum.
Is Polygon USDT the same contract as Ethereum USDT?
No. Ethereum Tether is 0xdAC17F958D2ee523a2206206994597C13D831ec7 on Etherscan. This route pays 0xc2132D05D31c914a87C6611C10748AEb04B58e8F on Polygonscan. Both use 6 decimals, so the amount can look familiar while the chain is different. Switch the wallet to chain id 137 and match the full address before you spend it.
Will the received USDT pay Polygon gas?
No. Gas on chain id 137 is POL. USDT is an ERC-20, so a wallet with only that token cannot move it. Keep POL on the destination address. The send itself still needs ETH on Ethereum, chain id 1, because Circle USDC cannot pay mainnet gas either. Blocks on Polygon are about 2 seconds once POL is available.
What if I only wanted USDT on Ethereum?
Sell Circle USDC for Tether on Ethereum and stop. The output there is 0xdAC17F958D2ee523a2206206994597C13D831ec7. This bridge is the wrong tool for that balance. Use it when a Polygon address is expecting the PoS USDT contract and the dollars you hold today are still Circle USDC on mainnet.
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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