BIP39 · BIP32 · BTC · Ethereum · 100% offline
Seed Phrase Recovery
Recover a lost or incomplete BIP39 seed phrase — entirely in your browser. Your words never touch a server.
Fill in the words you know and leave the unknown ones blank. The engine tries every combination, keeps only checksum-valid phrases, and confirms them against your address when you provide one.
Length:
Leave a box blank (or type ?) for any word you don't know. Paste a whole phrase into the first box to fill the grid.
Add a receive address from the wallet to pinpoint the exact phrase. The script type (BTC/ETH) is detected automatically and the first 20 receive addresses are checked.
Search space: —
100% offline: every calculation runs locally in WebAssembly. Your seed words never leave this page.