Unwrap WETH

ETH … WETH …

Convert WETH Back to Native ETH

Unwrap WETH is the direct redemption of Wrapped Ether for an equal amount of native ETH through the WETH9 contract — one transaction, no counterparty, no slippage.

Open the Unwrap WETH app How it works

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WETH tokenWETH 0.00Preview
ETH tokenETH 0.00Preview
WETH → ETHPreview route
ETH token ETH
PairETH / WETH
Network costGas
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Wrapped Ether (WETH) Conversion & Router Overview

WETH is Wrapped Ether: native ETH locked in a smart contract and re-issued as an ERC-20 token so it can move through dApps that expect the standard token interface.

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Unwrapping is how you leave — you call the contract, it burns your WETH balance, and the same amount of native ETH lands back in your wallet. This is an independent, non-custodial dashboard explaining that flow; nothing here ever takes custody of your funds.

TokenWrapped Ether (WETH) — ETH represented as an ERC-20 token
Backing / peg1 WETH redeemable for 1 ETH before gas; backing is ETH held by the contract
ConvertCall withdraw(amount) on WETH9 directly, or trade on a DEX
NetworksCanonical WETH9 on Ethereum Mainnet (chain ID 1); other networks use different contracts
CostsNo protocol fee on a direct unwrap — just network gas paid in ETH; DEX swaps add pool fee and price impact
VerifyCheck the contract address, not the ticker
Unwrap WETH

What is Wrapped Ether (WETH)?
WETH is native ETH represented as an ERC-20 token, so dApps built around approve/transferFrom can handle it; DEX routers, NFT marketplaces, and lending pools all expect that token interface. Native Ether predates the token standard. On Ethereum Mainnet, the canonical implementation is the WETH9 contract: deposit ETH to receive the same amount of WETH, then reverse it at any time. Both use 18 decimals and amounts are accounted in wei. The 1:1 rate is mechanical, not maintained by market makers: the backing ETH sits inside the same contract that issued the token, so one WETH redeems for one ETH.

Getting in and out
To unwrap WETH directly, your wallet submits withdraw(amount) to WETH9; the contract subtracts that amount from your WETH balance and transfers the identical amount of native ETH back to your address. A direct call from the wallet holding the WETH needs no token approval because the holder is instructing the contract, not granting a spender. Wrapping is the reverse: ETH goes to the contract's deposit function and WETH is minted. Keep native ETH available because gas is paid in ETH, not WETH; if you spend your last wei of ETH wrapping, you cannot afford the transaction to get back out. A DEX can also acquire or offload WETH, but that is a market swap with a different mechanism and cost stack.

Swapping it on a DEX
A DEX swap trades WETH for another token through a liquidity pool; it does not redeem WETH for native ETH. The route adds the pool's fee tier to network gas, and its execution price moves with trade size relative to pool depth - the price impact. Price slippage is the gap between the expected and executed price, so read the quoted minimum received and price-impact figure before submitting a thin-pair trade. The router usually needs a one-time ERC-20 approval to spend WETH; scope that allowance to the amount you intend to trade. Many interfaces auto-wrap or auto-unwrap ETH at the edges of a route, so inspect whether the transaction is moving WETH, native ETH, or both.

The token vs its native asset
Native ETH and WETH have the same canonical redemption value but different interfaces: ETH is the native asset used for gas and plain-address transfers, while WETH is the ERC-20 form used by DEX pools, NFT marketplaces, and lending protocols. Hold native ETH for transactions that need gas and use WETH when an application requires the token interface; convert back when that application is finished. A token labeled WETH on another network is a different contract, possibly issued by a bridge with a different trust model, so Ethereum Mainnet's redemption mechanics do not automatically carry over.

Costs and gas
A direct unwrap costs Ethereum network gas for one transaction; WETH9 charges no protocol conversion fee, and the 1:1 redemption is exact before gas. Settlement takes however long block inclusion requires under the fee you set and your wallet's confirmation policy, with no additional clearing step. A DEX swap has a different cost stack: network gas, the pool's fee on the traded amount, price impact from trade size against pool depth, and any fee disclosed by a third-party interface or router. That extra fee belongs to the front end, not the WETH contract.

Is Unwrap WETH safe?
The canonical WETH9 contract is a small deposit, withdraw, and transfer system that is publicly verified, widely reviewed, and has held mainnet ETH for years. On Ethereum Mainnet, match the canonical WETH9 address 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2 and the requested withdraw(amount) target before signing. The remaining risks are at the edges: a phishing interface asking for another action, a lookalike token, the wrong network, or a malicious approval; self-custody means the wallet holder keeps control and carries those checks.

Problems and fixes
Fix an unwrap failure by matching the error to the transaction's balance, network, token, approval, or action. No gas: native ETH pays the transaction fee, so a zero ETH balance needs a small ETH top-up first. Wrong network: canonical WETH9 is on Ethereum Mainnet (chain ID 1); another chain uses a different contract. Wrong token: compare the dApp's WETH contract address with the canonical address when a displayed balance cannot be unwrapped. Stuck on approvals: a failed router trade can leave its allowance live; review and revoke stale allowances. Wrong action: direct withdraw(amount) returns native ETH, while a swap or bridge changes the mechanism and cost basis.

WETH FAQ
What is WETH?

WETH is Wrapped Ether - native ETH deposited into a smart contract and re-issued as an ERC-20 token. It exists because ETH predates the ERC-20 standard and cannot natively use the token interface most dApps require.

Is WETH the same as ETH?

In value, one WETH redeems for one ETH before gas. Mechanically, no: ETH is the network's native asset used for gas, while WETH is an ERC-20 token representing ETH held in the contract.

How do I convert WETH back to ETH?

Call withdraw(amount) on the WETH9 contract from the wallet holding the WETH. The contract burns that WETH balance and sends the same amount of native ETH back to you in one transaction; no approval is needed when you call it directly.

Is WETH always 1:1 with ETH? How is it backed?

For the canonical contract, redemption is exactly one WETH for one ETH before gas because every WETH is backed by ETH locked in the same contract. Secondary-market prices may show tiny deviations, but the contract redemption rate is fixed.

What does it cost to unwrap WETH?

WETH9 charges no protocol fee: you pay Ethereum network gas in native ETH. A DEX swap or a third-party interface may add a pool fee, price impact, or its own disclosed fee instead.

Is the WETH contract safe to use?

The canonical WETH9 contract is simple, publicly verified, and formally analyzed. Its Ethereum Mainnet identity is the WETH9 contract address, not the WETH ticker.

Notes before you unwrap weth

Unwrap WETH through the canonical contract and you are making a plain Ethereum transaction - no pool, no price, no counterparty, just your wallet telling WETH9 to return native ETH.

Keep native ETH available for gas; wrapping your last wei of ETH leaves no ETH to pay for the unwrap transaction.

Before you sign: match 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2 on mainnet, keep native ETH for this transaction and the next one, and if you use a DEX read minimum received and price impact while scoping the approval to the intended trade.

Everything on this page was checked against the canonical WETH9 contract and public Ethereum documentation, last reviewed 21 July 2026.

Independent reference - confirm the route in your own wallet.