Sei: wrap & unwrap SEI
Convert SEI ⇄ WSEI 1:1 with the official WSEI contract. Use your connected wallet or process a whole list of wallets in one run.
What is WSEI?
WSEI is SEI packaged as a standard token. DEX pools, lending markets, NFT marketplaces and many smart contracts can only handle tokens, not the native coin, so they use WSEI. The WSEI contract holds every deposited SEI and mints exactly the same amount of WSEI; unwrapping burns it and returns the SEI. Nothing else is involved — no price, no slippage, no counterparty.
Why use this tool
- Canonical contracts only — the same WSEI address that DEX routers use, verified on-chain.
- Every transaction is simulated first; the network fee is shown before you sign.
- “Max” keeps enough SEI for gas, so a wallet is never left unable to move.
- Bulk mode: wrap or unwrap in many wallets at once (entire balance, a percentage or a fixed amount), keys never leave your browser.
- No service fee — only network gas.
FAQ
Does wrapping change the value of my SEI?
No. 1 SEI = 1 WSEI, always. The contract holds the SEI and gives it back 1:1 when you unwrap.
When do I need WSEI?
When a protocol works only with tokens: adding liquidity, some DEX trades, lending, NFT bids or a bot that trades WSEI pairs.
How much does it cost?
Only the network fee of one contract call. ChainTx charges nothing for wrapping or unwrapping.
Is bulk mode safe?
Private keys are processed only in your browser tab to sign each wallet’s own transaction and are never sent to our servers. For everyday use, the connected-wallet mode needs no keys at all.