Cross-chain · Ethereum → BNB Chain

Swap WETH from Ethereum to USDC on BNB Chain

Swap WETH from Ethereum to USDC on BNB Chain. Holders of wrapped ETH who need Binance-Peg dollars spend WETH and receive that USDC on chain 56.

WETH and ETH are different contracts. You approve wrapped ETH at 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2 on Etherscan. Withdrawing from that contract unwraps to native ETH and stays on Ethereum. This route does the other job: it spends WETH and delivers Binance-Peg USDC at 0x8AC76a51cc950d9822D68b83fE1Ad97B32Cd580d on BscScan. Gas on the way out is still ETH, chain id 1, about 12 seconds a block. The pegged USDC uses 18 decimals. Confirm that field on BscScan before you deposit the dollars into an app.

Diagram for Swap WETH from Ethereum to USDC on BNB Chain
WETH leaves Ethereum. USDC is what can arrive on BNB Chain.

Unwrapping WETH is the wrong tool here

If you want native ETH on Ethereum, call withdraw on 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2 and stop. That action never creates a BNB Chain balance. This page is for a wallet that must hold Binance-Peg USDC. A mainnet swap of WETH into Circle USDC is also the wrong tool when the dollars have to sit on chain 56.

The two contracts to compare

Source: 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2 on Etherscan, 18 decimals. Destination: 0x8AC76a51cc950d9822D68b83fE1Ad97B32Cd580d on BscScan, 18 decimals, Binance-Peg USDC. Circle's Ethereum USDC is 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 and is not what you receive. Matching the USDC ticker is not matching the address.

ETH gas even though you spend WETH

WETH cannot pay the Ethereum fee. The wallet needs native ETH beside the wrapped balance or the approval sits unsigned. How to bridge assets between chains walks through that source-chain signature. On chain 56 the fee changes to BNB, and pegged USDC does not cover it.

After the pegged dollars arrive

Switch to chain id 56, which blocks about every 3 seconds, and read the token on BscScan before you deposit it. Apps that want BSC-USD, the Tether contract, will ignore this USDC. Apps that want Ethereum USDC are on the wrong network entirely.

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 WETH from Ethereum to USDC on BNB Chain?

WETH and ETH are different contracts. You approve wrapped ETH at 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2 on Etherscan.

Can I unwrap WETH and bridge the ETH instead?

You can unwrap on Ethereum, and that is a different route from this one. Withdrawing WETH at 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2 returns native ETH on chain id 1. This page spends the WETH contract directly and pays Binance-Peg USDC at 0x8AC76a51cc950d9822D68b83fE1Ad97B32Cd580d. Pick the output the wallet is supposed to hold.

What do I approve on Etherscan?

Approve 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2, the WETH contract. Do not approve Circle USDC for this pair. You still need native ETH for gas on chain id 1, because an ERC-20 approval is a transaction of its own. Blocks are about 12 seconds. WETH is the asset. ETH is the fee.

Is Binance-Peg USDC 6 decimals like Circle USDC?

No. The token at 0x8AC76a51cc950d9822D68b83fE1Ad97B32Cd580d on BscScan uses 18 decimals. Circle USDC on Ethereum uses 6. If the wallet shows a balance that looks a trillion times too large or too small, the decimal field is wrong. Re-import the contract from BscScan before you send it onward.

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.

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