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Seed Phrase Recovery
Private · Offline · Open-source

Seed Phrase Recovery

Recover a lost or incomplete BIP39 seed phrase — entirely in your browser. Your words never touch a server.

Runs in your browser

All computation happens on your device, in WebAssembly. No install, no account.

Nothing is sent anywhere

Your seed words and addresses never leave this page — not to us, not to anyone.

Open-source & auditable

The recovery engine is public and verifiable. You can read exactly what it does.

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 chain (Bitcoin, Ethereum/EVM, Litecoin, Dogecoin, Bitcoin Cash, Tron, Solana) is detected automatically and the first receive addresses are checked.

Search space: —

100% offline: every calculation runs locally in WebAssembly. Your seed words never leave this page.

Blog

Read the blog
Monero Seed Recovery: The 25-Word Mnemonic Explained
Monero uses a 25-word seed, not BIP39 — its own wordlist, checksum, and keys. How the Monero mnemonic works, and how to identify and recover yours safely.
seed-phraserecoverymoneroself-custody
SLIP39 Shamir Backup Recovery: Combining Your Shares
SLIP39 (Trezor Shamir backup) splits your wallet into shares — 20 or 33 words each. How it works, how many shares you need, and how to combine them safely.
seed-phraserecoveryslip39shamir
Electrum Seed Recovery: Why It's Not BIP39
Electrum uses its own seed format, not BIP39 — which is why other wallets call it 'invalid'. How Electrum seeds work, and how to identify and restore yours.
seed-phraserecoveryelectrumbitcoin