Cross-chain · Arbitrum One → BNB Chain

Swap WETH from Arbitrum One to ETH on BNB Chain

Swap WETH from Arbitrum One to ETH on BNB Chain. Arbitrum WETH leaves and pegged ETH arrives on BNB Chain.

Spend 0x82aF49447D8a07e3bd95BD0d56f35241523fBab1 on Arbitrum One. That is WETH, checked on Arbiscan, chain id 42161, not Nova. Fee in native ETH. Receive 0x2170Ed0880ac9A755fd29B2688956BD959F933F8, Binance-Peg ETH, a BEP-20 on BNB Chain. BscScan is the explorer. It is not native BNB, not the sentinel, and not Ethereum WETH at 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2. Chain id 56, gas in BNB, blocks about 3 seconds. No promised credit time follows from that.

Diagram for Swap WETH from Arbitrum One to ETH on BNB Chain
WETH leaves Arbitrum One. ETH is what can arrive on BNB Chain.

Three ETH-like contracts, one of them is yours

Arbitrum WETH is what you sell. Ethereum WETH is a mainnet contract this route never touches. Binance-Peg ETH is what can arrive. They share a story about ether and almost nothing else: different chain ids, different addresses, different roles. Write the three addresses down if you are moving size. 0x82aF49447D8a07e3bd95BD0d56f35241523fBab1 out. 0x2170Ed0880ac9A755fd29B2688956BD959F933F8 in. 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2 is the one you should not expect to see.

A peg is not a withdraw button

Unwrapping Arbitrum WETH returns native ETH on chain id 42161. It does not mint the BEP-20 on BNB Chain. This route is the one that can credit the peg, and the amount is still a quote, not a guaranteed one-for-one across chains. Read the minimum. The peg can also differ from the ETH price you watch on Ethereum. BscScan is where you verify the token you hold after the fact.

BNB for later, ETH for now

The BEP-20 cannot pay chain id 56 fees. Hold BNB separately. The source approval of WETH costs ETH on Arbitrum One. How to bridge assets between chains is the right note if you assumed a wrapped token on one chain is already the wrapped token on the next. It is not.

Wrong for gas seekers and for mainnet WETH

If you need native BNB, the sentinel route is the one to open. If you need canonical WETH on Ethereum, this page is aimed at the wrong chain. If you are holding native ETH rather than 0x82aF49447D8a07e3bd95BD0d56f35241523fBab1, the quote is aimed at the wrong balance. Nova is the wrong network in every one of those cases.

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 Arbitrum One to ETH on BNB Chain?

Spend 0x82aF49447D8a07e3bd95BD0d56f35241523fBab1 on Arbitrum One. That is WETH, checked on Arbiscan, chain id 42161, not Nova.

Is Binance-Peg ETH the same as Arbitrum WETH?

No. You sell 0x82aF49447D8a07e3bd95BD0d56f35241523fBab1 on Arbitrum One. You can receive 0x2170Ed0880ac9A755fd29B2688956BD959F933F8 on BNB Chain. Ethereum WETH is 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2 and is neither side. Confirm the receive token on BscScan. The peg does not pay BNB Chain gas. Confirm that address on the explorer before you sign, and refresh the quote if it has expired.

Can I unwrap WETH on Arbitrum and land on BNB Chain?

No. Withdraw on the Arbitrum WETH contract pays native ETH on chain id 42161 only. It does not create 0x2170Ed0880ac9A755fd29B2688956BD959F933F8. Use this route if the BEP-20 is the goal, and keep ETH for the fee. About 3 seconds is a BNB Chain block, not the unwrap, and not a bridge promise.

What is the native gas token on the destination?

BNB, marked by 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE on chain id 56. This route does not credit that sentinel. It credits the pegged ETH token. You need BNB already, or from another route, before you can transfer the BEP-20. Source gas remains ETH on Arbitrum One, not Nova. Confirm the address on the explorer before you sign.

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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