Cross-chain · Polygon → Ethereum

Swap USDT from Polygon to WETH on Ethereum

Swap USDT from Polygon to WETH on Ethereum. Tether USDT leaves Polygon. WETH is what can arrive on Ethereum. You take ether price exposure in a wrapper that still cannot pay gas.

The source is 0xc2132D05D31c914a87C6611C10748AEb04B58e8F. The destination is 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2. Native ETH would be 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE, and this quote skips it. Polygonscan for the debit, Etherscan for WETH. Chain details for the source are on Polygon.

Diagram for Swap USDT from Polygon to WETH on Ethereum
USDT leaves Polygon. WETH is what can arrive on Ethereum.

You can arrive unable to move the WETH

WETH is not ETH. A fresh Ethereum wallet with only 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2 cannot pay the fee to unwrap or transfer it. If funding gas was the goal, this route is wrong. Buy native ETH instead.

Polygon WETH is not this destination

Bridged WETH on Polygon is 0x7ceB23fD6bC0adD59E62ac25578270cFf1b9f619. You are not selling that. You are selling Tether. If the balance you meant to use is Polygon WETH, stop and open the WETH route.

Tether does not survive the hop

Ethereum USDT at 0xdAC17F958D2ee523a2206206994597C13D831ec7 is a different choice. Maker DAI is another. This page sells the peg and buys wrapped ether. Read the output symbol before you approve 0xc2132D05D31c914a87C6611C10748AEb04B58e8F.

Two clocks, neither is the bridge

Polygon blocks are about 2 seconds. Ethereum blocks are about 12 seconds. The bridge leg has no finish time on this page. POL pays the source. If the quote expires while you compare WETH and ETH, refresh it.

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 USDT from Polygon to WETH on Ethereum?

The source is 0xc2132D05D31c914a87C6611C10748AEb04B58e8F. The destination is 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2. XAUConnect compares live routes and lets your own wallet sign.

Can I unwrap this WETH without any ETH?

No. Unwrapping 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2 costs ETH gas on chain id 1. This route does not include that ETH. Etherscan can show a WETH balance and a zero ETH line at the same time. Fund ETH first if you need to touch the wrapper. This hop does not include that gas.

Is Polygon USDT the contract at 0xdAC17?

No. 0xdAC17F958D2ee523a2206206994597C13D831ec7 is Ethereum Tether. This route spends 0xc2132D05D31c914a87C6611C10748AEb04B58e8F on chain id 137. Polygonscan is the explorer for that debit. Approving the Ethereum contract does not move the Polygon balance. Check chain id 137 before you sign the allowance. Those Tether contracts are on different chains.

What should I do if I needed native ETH for gas?

Leave this quote if you needed gas. Native ETH uses 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE, and WETH will not pay the next fee. ETH is not WETH. Sign the native output when the funds you move have to pay chain id 1. Etherscan should show ETH, not only the wrapper.

Live execution

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.

Swap cross-chainExplore markets

Continue exploring

Related markets, guides & networks

Next pages on this subject. Read them before you trade.

Networks
Tokens
Guides
Articles

Build programmatically

Swap via API for bots and AI agents: quotes, builds, and cross-chain routes.

Developer quickstart