BIP-39 Mnemonic Generator Online
Generate secure 12 or 24-word recovery phrases
100% client-side — your data never leaves your browser
Cómo usar BIP-39 Mnemonic Generator
- 1
Choose word count
Select 12 words (128-bit entropy) or 24 words (256-bit entropy).
- 2
Click Generate
A new mnemonic phrase is created using cryptographic randomness.
- 3
Save securely
Write down the phrase on paper. Never store it digitally or share it with anyone.
¿Qué es BIP-39 Mnemonic Generator?
Generate cryptographically secure 12 or 24-word BIP-39 recovery phrases entirely in your browser. Uses the Web Crypto API for true randomness and SHA-256 for checksums. Your seed phrase is never transmitted or stored. Compatible with MetaMask, Ledger, Trezor, and all BIP-39 wallets.
Preguntas frecuentes
Is my data safe?
Yes. All processing happens entirely in your browser. Your data never leaves your device and is never uploaded to any server.
Is this BIP-39 compliant?
Yes. The generator follows the BIP-39 standard exactly: cryptographic entropy, SHA-256 checksum, and the official 2048-word English wordlist.
Which wallets support these mnemonics?
All BIP-39 compatible wallets including MetaMask, Ledger, Trezor, Trust Wallet, Phantom, and most modern cryptocurrency wallets.
Should I use 12 or 24 words?
12 words (128-bit entropy) is secure for most uses. 24 words (256-bit entropy) provides extra security for very high-value wallets. Both are considered safe by current standards.
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