Cross-chain · Arbitrum One → Ethereum

Swap USDT from Arbitrum One to USDC on Ethereum

Swap USDT from Arbitrum One to USDC on Ethereum. Tether USDT leaves Arbitrum One and Circle USDC arrives on Ethereum.

You are changing issuer as well as chain. The sold contract is Tether USDT at 0xFd086bC7CD5C481DCC9C85ebE478A1C0b69FCbb9 on Arbitrum One. Check it on Arbiscan. The bought contract is Circle USDC at 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 on Ethereum. Check that one on Etherscan. Arbitrum One is chain id 42161, not Nova, and gas is ETH. Ethereum is chain id 1. Blocks there are about 12 seconds. That is not a clock for the issuer change.

Diagram for Swap USDT from Arbitrum One to USDC on Ethereum
USDT leaves Arbitrum One. USDC is what can arrive on Ethereum.

Two issuers, both six decimals

Tether and Circle both use six decimals on these contracts, so the unit size looks familiar. The issuer does not. USDT at 0xFd086bC7CD5C481DCC9C85ebE478A1C0b69FCbb9 is Tether's token on Arbitrum One. USDC at 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 is Circle's token on Ethereum. A quote can show a small gap even when both aim at a dollar, because liquidity and fees sit between them. Read the minimum received instead of assuming one-for-one.

Where each explorer fits

Arbiscan is only for the spend. If the USDT page you opened is on Etherscan, you are looking at Ethereum's Tether contract, 0xdAC17F958D2ee523a2206206994597C13D831ec7, which this route does not sell. Etherscan is for the USDC you hope to receive. Chain id 42161 must be selected when you approve. Chain id 1 is where the Circle balance should appear. Mixing those explorers is how a pasted address goes to the wrong network.

ETH for the fee, dollars for the trade

Neither stablecoin pays gas on Arbitrum One. Keep ETH in the same wallet on chain id 42161. The approval and the swap are separate costs if the allowance is short. You do not need USDC on Ethereum before the credit. You may want a little ETH on Ethereum later if you will move that USDC, because mainnet transfers are not free. Ethereum is the network that will hold the Circle balance.

Stay on this page only for an issuer switch

This route is wrong if you wanted Tether USDT to remain Tether on Ethereum. It does not deliver 0xdAC17F958D2ee523a2206206994597C13D831ec7. It is wrong if you wanted DAI from Maker, and wrong if the balance you hold is a bridged dollar rather than 0xFd086bC7CD5C481DCC9C85ebE478A1C0b69FCbb9. It is also the wrong page for Arbitrum Nova or for a same-chain swap that never needed Ethereum.

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 Arbitrum One to USDC on Ethereum?

You are changing issuer as well as chain. The sold contract is Tether USDT at 0xFd086bC7CD5C481DCC9C85ebE478A1C0b69FCbb9 on Arbitrum One.

Are these two contracts the same USDC?

No. The token you sell is Tether USDT at 0xFd086bC7CD5C481DCC9C85ebE478A1C0b69FCbb9 on Arbitrum One. The token you can receive is Circle USDC at 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 on Ethereum. Same six-decimal style, different companies. Confirm the receive address on Etherscan. A wallet label that only says USD is not a match.

Why might the dollar amount move?

Both assets target a dollar, but the route still crosses liquidity. Fees and the book between Tether and Circle can leave you with a little less than the amount you typed. The number that matters is the minimum on the quote. If that minimum is below what you will accept, do not sign.

Can I receive this USDC on Arbitrum Nova?

No. The spend network is Arbitrum One, chain id 42161, and the receive network is Ethereum, chain id 1. Nova is a different Arbitrum chain and will not show this Circle balance. If your wallet is pointed at Nova, switch to Arbitrum One before you approve USDT on Arbiscan's contract.

Live execution

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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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