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BIP39 MNEMONIC
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GENERATE MNEMONIC
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CUSTOM ENTROPY (OPTIONAL)
Example: 128 bits (12 words) = 32 hex chars, 256 bits (24 words) = 64 hex chars
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ABOUT BIP39
BIP39 is a Bitcoin Improvement Proposal that describes how to generate a mnemonic sentence (seed phrase) of 12-24 words that can be used to derive cryptocurrency wallet keys.
Security: Store your mnemonic phrase securely. Anyone with access to it can access your funds. Never share it or enter it on untrusted websites.
Word Count:
- 12 words = 128 bits of entropy (most common)
- 15 words = 160 bits of entropy
- 18 words = 192 bits of entropy
- 21 words = 224 bits of entropy
- 24 words = 256 bits of entropy (maximum security)
Passphrase: An optional extra word that can be added to the mnemonic for additional security. Different passphrases generate different wallets from the same mnemonic.
⚠️ IMPORTANT: This tool is for educational purposes. For production use, generate mnemonics on an offline, secure device.