Wrap WETH
To wrap WETH, deposit ETH into the WETH9 contract and receive the same amount of WETH, an ERC-20 token. On Ethereum mainnet, one transaction converts ETH to WETH at a 1:1 ratio. Keep extra ETH for gas; unwrapping returns the equivalent ETH to your wallet.
Wrap WETH converts ETH into WETH at 1:1 and unwraps WETH back into ETH. Choose your direction, enter an amount, and keep a little ETH for gas.
Start wrapping
On Ethereum. In your wallet.
Wrap ETH to WETH
EthereumETHWETHNetwork gas is paid separately in ETH.
Wrap WETH key facts
| Network and tokens | Ethereum mainnet (chain ID 1); native ETH and ERC-20 WETH9. Wrapping keeps both on Ethereum. |
|---|---|
| Conversion | 1 ETH = 1 WETH in either direction; direct WETH9 deposits and withdrawals have no pool slippage. |
| Fees | 0% WETH9 conversion fee, plus gas in ETH. Example gas budget: 50,000 units at a 10 gwei maximum fee = 0.0005 ETH; actual cost uses gas consumed and the effective gas price. |
| Transaction time | One transaction per wrap or unwrap; balances update at block inclusion. Ethereum slots are 12 seconds apart; inclusion depends on fee settings and network demand. |
| What you need | An Ethereum wallet, ETH to wrap or WETH to unwrap, and ETH for gas in either direction. Direct WETH9 deposit and withdrawal need no ERC-20 spending approval. |
| Custody | Your wallet controls the WETH balance; the WETH9 contract holds the backing ETH and releases it when you unwrap. |
See the WETH9 contract on Etherscan and Ethereum documentation on gas fees and block timing.
How wrapping ETH
into WETH works
WETH gives ETH the ERC-20 interface used by token-based applications. Deposit ETH into the WETH contract and receive an equal WETH balance, backed by the ETH held in that contract.
Unwrapping reverses the process: the contract removes WETH from your balance and releases the same amount of ETH. Your assets stay on the same network throughout.
Set the amount
Choose Wrap or Unwrap and enter how much to convert.
Review in wallet
Check the network, contract, amount, and gas fee before confirming.
Receive 1:1
The new balance is available when the transaction is included in a block.
WETH wrapping fees
and transaction time
The WETH9 contract converts the full amount at 1:1. Ethereum gas is a separate cost, paid in ETH for each wrap or unwrap transaction.
Keep ETH for gas
Leave a gas reserve before wrapping. Unwrapping also needs ETH upfront, even though the transaction returns ETH.
One transaction
Balances update on block inclusion. Network demand and fee settings affect the wait; finality follows later.
Budget your ETH for gas
Enter the gas limit and maximum fee from your wallet. Your wrap amount above is included in the total below.
Gas budget = gas limit × max fee × 10−9 ETH.
The charged fee uses gas consumed and the effective gas price. Unused gas budget stays in your wallet.
When to use ETH or WETH
Choose the form your next transaction needs. Wrapping changes the token interface; ETH remains the underlying asset.
| What you want to do | ETH | WETH |
|---|---|---|
| Pay Ethereum gas | Native gas currency | Unwrap to hold ETH for future fees |
| Use an ERC-20 application | Wrap first, or use an app with built-in wrapping | Compatible with ERC-20 interfaces |
| Place a marketplace offer | Used for native ETH payments | Used by marketplaces that accept WETH offers |
| Provide liquidity or collateral | Accepted by protocols with native ETH support | Used in supported WETH pools and lending markets |
| Move to another network | Requires a bridge route | Requires a bridge route |
Wrap WETH with the
right contract
The contract address identifies the token. On Ethereum mainnet, check the WETH9 address below against the transaction in your wallet.
0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2Match the network
A WETH balance belongs to a specific chain. Use the contract for the network selected in your wallet.
Read the transaction
Direct wrapping calls deposit; direct unwrapping calls withdraw. Check the amount and destination contract before signing.
Review token permissions
A separate router may request a WETH allowance. Review the spender and amount. Direct WETH9 withdrawal uses your own balance.
Wrap WETH
questions, answered
Amounts, approvals, gas, and getting back to native ETH.
What is the difference between ETH and WETH?
ETH is Ethereum's native currency, used for gas and transfers. WETH is ETH held in a wrapper contract and represented as an ERC-20 token. Direct wrapping and unwrapping convert the token amount at 1:1.
How do I wrap ETH into WETH?
Open the app, select Wrap, and enter your ETH amount. Keep additional ETH for gas, check the Ethereum network and WETH contract in your wallet, then confirm the deposit. The contract credits the same amount of WETH to your address.
How do I unwrap WETH back to ETH?
Select Unwrap and enter the WETH amount. Confirm the withdrawal transaction in your wallet. The WETH9 contract removes that WETH balance and returns the equivalent ETH. Keep ETH in your wallet to pay the transaction fee before the withdrawal completes.
Is there slippage when wrapping ETH?
A direct WETH9 deposit or withdrawal uses a fixed 1:1 conversion and has no liquidity-pool slippage. Network gas is paid separately in ETH. Trading WETH through a liquidity pool follows that pool's market price and fees.
Do I need a token approval to wrap or unwrap?
A direct ETH deposit into WETH9 needs a payable transaction. A direct WETH9 withdrawal uses your own token balance. ERC-20 spending approvals apply when a separate contract, such as a router, spends WETH for you; check the spender and allowance before signing.
How long does wrapping WETH take?
Wrapping and unwrapping each take one on-chain transaction with the WETH9 contract. The balance updates when the transaction is included in a block. Inclusion time depends on network demand and your fee settings; finality follows later.
Can I use WETH on another network?
WETH exists on several networks, with network-specific contracts and balances. Wrapping on Ethereum keeps your assets on Ethereum. To move assets to another network, use a bridge route and check the destination token contract.
Does WETH earn staking rewards?
Wrapping changes ETH into an ERC-20 token. WETH has no built-in staking yield. Rewards from lending, liquidity provision, or staking come from a separate protocol and its own terms.
Wrap ETH. Unwrap WETH.
The same 1:1 conversion, whichever direction you choose.