Converting Wrapped Ethereum (WETH) back to Ethereum (ETH) is a common need for NFT traders and DeFi users. Whether you've earned WETH from OpenSea sales or other platforms, this guide covers multiple methods to safely swap your tokens.
Understanding WETH and ETH
Before converting, it's essential to know:
- WETH is an ERC-20 token pegged 1:1 to ETH, enabling compatibility with smart contracts (like NFT marketplaces).
- ETH is Ethereum's native currency, used for gas fees and direct transactions.
Method 1: Convert via MetaMask (Ethereum Network)
Steps:
- Open MetaMask and ensure you're on the Ethereum Mainnet.
- Click the "Swap" button in the app.
- Select WETH as the "From" token and ETH as the "To" token.
- Review the exchange rate and gas fees, then confirm the transaction.
👉 Learn more about MetaMask swaps
Method 2: Use OpenSea or Polygon Bridge (Polygon Network)
If your WETH is on Polygon (common for OpenSea Polygon-based sales):
Bridge to Ethereum:
- Navigate to the Polygon Bridge.
- Connect your wallet and select "Polygon → Ethereum" for the WETH transfer.
- Pay gas fees on both networks.
Swap to ETH:
- Once bridged to Ethereum, use OpenSea’s conversion tool or MetaMask’s swap feature.
Method 3: Decentralized Exchanges (DEXs)
For advanced users, DEXs offer liquidity-based swaps:
- Uniswap (app.uniswap.org)
- SushiSwap (app.sushi.com)
Steps:
- Switch your wallet to the correct network (Ethereum or Polygon).
- Select WETH and ETH trading pairs.
- Approve the token contract (one-time) and execute the swap.
FAQs
Why can’t I swap WETH to ETH directly on Polygon?
Polygon WETH exists on a separate blockchain. You must bridge it to Ethereum first.
Are there gas fees for conversions?
Yes. Ethereum transactions incur gas fees, while Polygon transactions are cheaper.
What if MetaMask’s swap fails?
Try adjusting slippage tolerance (1–3%) or use a DEX like Uniswap for better liquidity.
Key Takeaways
- Use MetaMask Swap for Ethereum-based WETH.
- Bridge Polygon WETH to Ethereum before converting.
- DEXs provide alternatives if platform tools fail.
For seamless crypto transactions, always verify network settings and gas fees.