Cross-chain · BNB Chain → Base

Swap ETH from BNB Chain to WETH on Base

Swap ETH from BNB Chain to WETH on Base. You send Binance-Peg ETH on BNB Chain and you receive WETH on Base.

The source is 0x2170Ed0880ac9A755fd29B2688956BD959F933F8. Approve it on BscScan, chain id 56, gas in BNB, blocks about 3 seconds. Base WETH is 0x4200000000000000000000000000000000000006. Match it on Basescan. It is not the peg, not native ETH, and not mainnet WETH. Chain id 8453. Base is an L2. Gas is ETH. The wrapper cannot pay that gas.

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

Peg in, predeploy out

This page spends only 0x2170Ed0880ac9A755fd29B2688956BD959F933F8. It does not spend BNB, and it does not wrap ETH that already sits on Base. If the peg balance is empty, there is nothing to approve. Keep BNB for gas on chain id 56. Both assets get called ether. The contracts do not match.

The predeploy still needs native ETH

0x4200000000000000000000000000000000000006 arriving does not top up ETH. Basescan shows a token, not a native credit. Every later move costs ETH on chain id 8453. A fresh wallet can display WETH and still fail a transfer. BNB left behind does not become that ETH. Etherscan will not show it.

Native ETH is the gas landing

If you wanted spendable gas, this wrapper is the wrong tool. Circle USDC is the wrong tool if you wanted dollars. How bridges work is the wait onto the L2. No WETH amount is promised. Other rollups share this predeploy shape. This page is Base only.

Do not drain BNB to buy more peg

The fee and the trade are different balances. Draining BNB stalls the approval. Read the minimum WETH before you sign on chain id 56. A 3 second block is not a Basescan timestamp. If the floor is too small, leave the quote unsigned. Other rollups reuse this predeploy shape, and only chain id 8453 is this page at all today.

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 ETH from BNB Chain to WETH on Base?

The source is 0x2170Ed0880ac9A755fd29B2688956BD959F933F8. Approve it on BscScan, chain id 56, gas in BNB, blocks about 3 seconds.

Are the peg and Base WETH the same token?

No. The peg is 0x2170Ed0880ac9A755fd29B2688956BD959F933F8 on BscScan. Base WETH is 0x4200000000000000000000000000000000000006 on Basescan, chain id 8453. Mainnet WETH is a third contract. This page pays the Base predeploy only. You need BNB to send and ETH to move the result. Base is an L2.

Can I unwrap the predeploy without holding ETH?

No. Unwrapping stays on Base and the fee is native ETH. This route does not include that unwrap. If your goal was the gas coin, open the native ETH page before you sign. A wallet that receives only the predeploy cannot pay for its own unwrap.

What if I meant to send BNB, not the peg?

Stop. BNB is the gas coin and has its own route to Base WETH. Approving 0x2170Ed0880ac9A755fd29B2688956BD959F933F8 will not spend BNB. Check the native balance on BscScan. This page is the wrong tool for a BNB sale, even when the payout is also called ether.

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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