Cross-chain · Ethereum → BNB Chain

Swap WETH from Ethereum to BNB on BNB Chain

Swap WETH from Ethereum to BNB on BNB Chain. Wallets that need native BNB spend wrapped ETH on Ethereum and receive the chain 56 gas coin.

You approve WETH at 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2 on Etherscan. You receive native BNB, marked 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE, which BscScan shows as the gas balance of chain id 56. That placeholder is not a token to import. Unwrapping WETH would have given you native ETH on Ethereum instead, and native ETH does not pay BNB Chain fees. Mainnet blocks are about 12 seconds. Chain 56 blocks are about 3 seconds.

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

The output is gas, not another ERC-20

0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE on this route means BNB. Once the wallet is on chain id 56, the native line should increase. If you imported the placeholder as a custom token, delete that row and read the native balance on BscScan. The WETH you spent will not appear there.

Approve wrapped ETH, pay native ETH

The contract that decreases is 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2. The fee on chain id 1 is ETH. A wallet with WETH and no ETH cannot start. How cross-chain bridges work is why the source chain collects a fee in its own coin before the destination coin exists.

Unwrap is the wrong tool for BNB

Withdrawing WETH returns ETH on Ethereum. Swapping WETH for USDC or USDT on Ethereum keeps you on chain id 1. This route is the wrong tool for both of those outcomes. Use it when the missing piece is BNB for a chain 56 signature. If you already hold a BNB Chain token, swap that token for BNB locally instead.

Keep some BNB unspent

The BNB you receive is what pays the next transaction. Sending the entire balance onward can leave the wallet unable to move anything else. Chain id 56 is cheap relative to mainnet and still not free. Leave a remainder sized for an approval plus a swap.

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 BNB on BNB Chain?

You approve WETH at 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2 on Etherscan. You receive native BNB, marked 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE, which BscScan shows as the gas balance of chain id 56.

Does this route unwrap my WETH into ETH first?

The result you hold is native BNB on chain id 56, not native ETH on Ethereum. WETH at 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2 is what you approve on Etherscan. A local unwrap would credit ETH on chain id 1 and stop. If ETH on Ethereum is the goal, do not open this pair.

How do I confirm the BNB arrived?

Set the wallet to chain id 56 and check the native balance on BscScan. The marker 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE is not a contract page you need to open. Blocks on BNB Chain are about 3 seconds. If the wallet network is still Ethereum, you will keep seeing ETH and miss the BNB.

What if I only hold WETH and no ETH?

Unwrap a small part of the WETH to native ETH first, on Ethereum, so the bridge approval can pay gas. Then spend the remaining WETH on this route. The fee and the asset are different. Chain id 1 will not accept WETH as gas.

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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