Cross-chain · Ethereum → Polygon
Swap DAI from Ethereum to USDT on Polygon
Swap DAI from Ethereum to USDT on Polygon. Someone paying Tether on chain 137 can spend Maker DAI from Ethereum and receive the PoS USDT.
You approve Maker DAI at 0x6B175474E89094C44Da98b954EedeAC495271d0F on Etherscan, 18 decimals. You receive Tether at 0xc2132D05D31c914a87C6611C10748AEb04B58e8F on Polygonscan, 6 decimals. Ethereum Tether at 0xdAC17F958D2ee523a2206206994597C13D831ec7 is not the balance that increases. The issuers differ: Maker on the way out, Tether on the way in. Gas to leave is ETH on chain id 1. Tell the payee to watch Polygonscan on chain id 137. An Etherscan tab open to Ethereum Tether will stay flat for the whole transfer. Confirm the contract there.
Polygonscan USDT is the payment asset
DAI for Ethereum Tether is a local swap
ETH out, POL in
Approve the Maker contract only
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 DAI from Ethereum to USDT on Polygon?
You approve Maker DAI at 0x6B175474E89094C44Da98b954EedeAC495271d0F on Etherscan, 18 decimals. You receive Tether at 0xc2132D05D31c914a87C6611C10748AEb04B58e8F on Polygonscan, 6 decimals.
Will Ethereum USDT increase if I run this route?
No. Ethereum Tether stays at 0xdAC17F958D2ee523a2206206994597C13D831ec7 on Etherscan. The new tokens are 0xc2132D05D31c914a87C6611C10748AEb04B58e8F on Polygonscan. Look there after you switch to chain id 137. Both can be labeled USDT. The address and the explorer are how you tell the payment landed.
Why do the decimals change?
Maker DAI uses 18 decimals. Polygon USDT uses 6, the same as Ethereum Tether. If the wallet was pointed at DAI's decimals, the USDT row will look wrong by many zeros. Re-import 0xc2132D05D31c914a87C6611C10748AEb04B58e8F from Polygonscan. Judge the trade by the quote you sign, which this page does not set.
What gas do I need on each side?
ETH on Ethereum to approve and spend the DAI, because chain id 1 charges ETH. POL on Polygon to move the USDT afterward, because chain id 137 charges POL. The route delivers neither gas coin. Blocks are about 12 seconds on the way out and about 2 seconds on Polygon.
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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