Wrap & Unwrap ETH
Base Wrapper
Base Wrapper: turn ETH into WETH and back on Base. Same contract as mainnet, at L2 fees.
How to use the Base Wrapper
- Connect your Base wallet
- Choose Wrap (ETH to WETH) or Unwrap (WETH to ETH)
- Enter the amount you want to convert
- Confirm the fee transaction and then the wrap transaction
- Your WETH (or ETH) is updated within seconds
Benefits of Wrapper
One transaction
send ETH, receive WETH, or the other way round
Always one for one
the wrapper holds your ETH and issues the same amount
Any amount
wrap what a single trade needs, unwrap part of it later
What contracts expect
Uniswap pools and DeFi protocols hold WETH, not ETH
Nothing custodial
the wrapper contract holds it and you redeem whenever you want
No coding
no router call to compose and no contract to interact with by hand
If you need more help contact our team
Got questions?
If you need more help contact our team
The same design, a different contract on a different network. They are not interchangeable: WETH on Base lives on Base, and moving it to mainnet means bridging, not unwrapping.
It deposits your ETH into the wrapper contract, which issues you the same amount of WETH, an ERC-20. Unwrapping returns the ETH and burns the WETH. The rate is one for one in both directions and there is no lock-up.
Because ETH is the network currency and not a token: it has no transfer or approve function for a contract to call. Anything written against the ERC-20 standard needs WETH instead, which is most of DeFi.
Yes, any amount at any time. The rest stays wrapped and usable.
The wrapper is one of the most used contracts on any EVM chain and does one thing: hold ETH and issue WETH against it. Your claim is the WETH in your wallet, redeemable whenever you want.
A small fee shown before you sign, plus Base gas. The conversion never takes a cut: what goes in comes out.
Wrapping on an L2
The WETH contract on Base works exactly as it does on mainnet: send ETH, receive the same amount of WETH, send it back to unwrap. What changes is that the transaction costs L2 gas, so wrapping the exact amount you need for one trade is practical rather than something you batch to save fees.
Watch how it works