Why ETH needs wrapping
Ether is Ethereum’s native currency, but it predates the ERC-20 token standard that DeFi is built around. Smart contracts that expect an ERC-20 — most AMMs, lending markets and DEX routers — cannot handle raw ETH directly. Wrapping solves this: you deposit ETH into the WETH contract and receive an equal amount of WETH, an ERC-20 that behaves like any other token.
How wrapping works
The WETH contract is a simple, audited vault. Send it ETH and it mints you WETH 1:1; return WETH and it burns the token and releases your ETH. WETH is always fully backed by the ETH locked in the contract, so it holds a hard peg to ETH by construction — no oracle or market needed.
- 1 WETH is always redeemable for 1 ETH — the peg is mechanical, not market-driven.
- WETH lets ETH trade in pools that only speak ERC-20.
- The same idea powers WBTC (wrapped Bitcoin) and other cross-asset wrappers.
WETH in on-chain markets
Because so much liquidity is denominated against WETH, it is a core reference asset for on-chain pricing. Most tokens are quoted through their WETH pairs first, then converted to USD. You can see WETH’s live pools, liquidity and volume on its token page, and read how those swaps become a price in how DEX prices work.
Frequently asked questions
Is WETH the same as ETH?
In value, yes — 1 WETH is always redeemable for 1 ETH. The difference is technical: WETH follows the ERC-20 standard so it works inside smart contracts, while ETH is the native coin used to pay gas.
Is it safe to hold WETH?
The WETH contract is one of the most battle-tested on Ethereum and is fully backed by locked ETH. The main risk is the same smart-contract risk that applies to any on-chain asset, which for WETH is very low given its history.
How do I convert WETH back to ETH?
Any DEX or wallet with an “unwrap” function calls the WETH contract to burn your WETH and return ETH 1:1. You only pay gas for the transaction.