Cross-chain · Base → Ethereum

Swap WETH from Base to ETH on Ethereum

Swap WETH from Base to ETH on Ethereum. Base WETH leaves, and native ETH on Ethereum mainnet is what arrives.

You are not unwrapping in place. Unwrapping on Base would return the gas coin on chain 8453 and never create a mainnet balance. This route takes WETH at 0x4200000000000000000000000000000000000006, visible on Basescan, and delivers native ETH on Ethereum. Interfaces write that arrival as 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE. Etherscan shows it as the account balance, not as a token contract. Ethereum is chain 1, with blocks around 12 seconds. Canonical WETH at 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2 is a different result.

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

Local unwrap versus this hop

A local unwrap burns Base WETH and credits Base ETH. You can pay Base fees with the result. This page sends the wrapped position toward Ethereum and credits the gas coin there. If a Base app needs ETH, the bridge is the long way around. If an Ethereum app needs the gas coin, the local unwrap never leaves chain 8453 and cannot help.

The arrival can pay fees, the input could not travel as gas

WETH is an ERC-20 and needs an approval on Base. Native ETH on Ethereum is the fee token, so once it arrives it can pay for later mainnet transactions. Do not assume the amount that arrives is sized as spare gas. Fees vary, and the quote's minimum is the floor, not a promise that surplus remains after the next transfer.

Refuse it for these orders

Refuse it if the order is canonical WETH on Ethereum. Refuse it if the order is USDC, USDT, or DAI. Refuse it if your Base balance is already native ETH, because this page cannot spend the gas coin. Refuse it if the wallet network is still Base while you look for the result on Etherscan. The balance is per chain.

Where to read the result

Account pages on Etherscan, not the WETH token page, are the arrival record. Trade on Ethereum is the chain context for what that ETH can do next. The debit is on Basescan. Twelve second blocks describe Ethereum's cadence. They do not describe how long the bridge takes. If the quote expires, take a new one instead of signing stale numbers.

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 Base to ETH on Ethereum?

You are not unwrapping in place. Unwrapping on Base would return the gas coin on chain 8453 and never create a mainnet balance.

Is receiving native ETH the same as receiving WETH?

No. Native ETH is the gas coin, marked 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE, and Etherscan shows it on the account. WETH is the ERC-20 at 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2. A pool that only accepts that contract will ignore the native balance until you wrap it on Ethereum. Wrapping is a separate step after the native coin arrives.

Can I just unwrap Base WETH and call that this swap?

No. Unwrapping Base WETH at 0x4200000000000000000000000000000000000006 returns ETH on Base, chain 8453. This route delivers ETH on Ethereum, chain 1. The tickers match and the chains do not. Basescan and Etherscan will show different account histories for the two actions. A local unwrap never creates the Ethereum balance this page is about.

Does the ETH that arrives pay Ethereum gas?

It is the gas coin, so it can, once it is credited. Spend some of it on a later transaction and the rest is what you keep. The input side still needed its own ETH on Base to pay for the WETH approval and the send. Those two ETH balances are not one pool of funds.

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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