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/ Mnemonic Generator/Validator

Security Warning

Never share your mnemonic phrase with anyone
Store it securely offline (paper wallet, hardware wallet)
Anyone with your mnemonic can access all your funds
This demo uses a limited word list - use proper BIP39 library in production

Mode

Word Count

About BIP39: BIP39 is a standard for generating mnemonic phrases (seed phrases) that can be used to derive HD wallets. A 12-word phrase provides 128 bits of entropy, while 24 words provide 256 bits. This demo uses a limited word list for demonstration purposes.

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Mnemonic Generator/Validator

Generate and validate BIP39 mnemonic phrases

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What is BIP39?

BIP39 (Bitcoin Improvement Proposal 39) is a standard for generating deterministic wallets using mnemonic phrases. These human-readable words (12 or 24) can be used to derive private keys and addresses.

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How does it work?

Generation Process A random entropy is generated, a checksum is calculated, and the result is mapped to words from a 2048-word list. The mnemonic can then be used with a key derivation function (PBKDF2) to generate a se…

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Sample Cases

Covers 12-word mnemonic and 24-word mnemonic so you can compare common inputs and outputs quickly.

/ Code

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/ Integration

Source code from the selected tool, shown here alongside the live version on the right.

/ Source Code

TypeScript

typescript

// npm install viem

import { english, generateMnemonic, mnemonicToAccount } from 'viem/accounts';

// Generate a 12-word mnemonic (128 bits entropy)
const mnemonic12 = generateMnemonic(english);
console.log("12-word mnemonic:", mnemonic12);

// Generate a 24-word mnemonic (256 bits entropy)
const mnemonic24 = generateMnemonic(english, { strength: 256 });