Mnemonic Code Converter

Mnemonic

You can enter an existing BIP39 mnemonic, or generate a new random one. Typing your own twelve words will probably not work how you expect, since the words require a particular structure (the last word is a checksum)

For more info see the BIP39 spec

a random word mnemonic, or enter your own below.

Warning

Entropy is an advanced feature. Your mnemonic may be insecure if this feature is used incorrectly. Read more

Entropy

Strength

Event Count

Entropy Type

Bits Per Event

Word Count

Total Bits

Filtered Entropy

Raw Binary

Mnemonic Length

Valid entropy values include:

Binary [0-1]
101010011
Base 6 [0-5]
123434014
Dice [1-6]
62535634
Base 10 [0-9]
90834528
Hex [0-9A-F]
4187a8bfd9
Card [A2-9TJQK][CDHS]
ahqs9dtc

Supply my own source of entropy

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BIP39 Mnemonic

BIP39 Passphrase (optional)

BIP39 Seed

Coin

BIP32 Root Key

For more info see the BIP44 spec

Purpose

Coin

Account

External / Internal

BIP32 Derivation Path

For more info see the BIP32 spec

BIP32 Derivation Path

Use hardened addresses

Mycelium Wallet

m/44'/0'/0' generates extended keys for import / export.

m/44'/0'/1' to generate the next account. Continue incrementing for more accounts (most use a single account).

m/44'/0'/0'/0 to generate public addresses.

m/44'/0'/0'/1 to generate change addresses.

For more info see the Mycelium Wallet homepage

Bitcoin Core

Use path m/0'/0' with hardened addresses.

For more info see the Bitcoin Core BIP32 implementation

Block Explorers

Use path m/44'/0'/0'. Only enter the xpub extended key into block explorer search fields, never the xprv key.

Supported by blockchain.info.

Derived Addresses

Note these addreses are derived from the BIP32 Extended Key

Path	Address	Public Key	Private Key

Show next

More info

BIP39 Mnemonic code for generating deterministic keys

BIP32 Hierarchical Deterministic Wallets

Read more at the official BIP32 spec and see the demo at bip32.org

BIP44 Multi-Account Hierarchy for Deterministic Wallets

Private Keys

Use private keys at brainwallet.org, but be careful - it can be easy to make mistakes if you don't know what you're doing

Entropy

Entropy values must be sourced from a strong source of randomness. This means flipping a fair coin, rolling a fair dice, noise measurements etc. Do NOT use phrases from books, lyrics from songs, your birthday or steet address, keyboard mashing, or anything you think is random, because chances are overwhelming that it isn't random enough for the needs of this tool.

The random mnemonic generator on this page uses a cryptographically secure random number generator, and can generally be trusted more than your own intuition about randomness. If cryptographic randomness isn't available in your browser, this page will show a warning and will not generate random mnemonics.

You are not a good source of entropy.

Offline Usage

You can use this tool without having to be online.

In your browser, select file save-as, and save this page as a file.

Double-click that file to open it in a browser on any offline computer.

Alternatively, download it from https://github.com/iancoleman/bip39

This project is 100% open-source code

Get the source code at - https://github.com/iancoleman/bip39

Libraries

BitcoinJS - https://github.com/bitcoinjs/bitcoinjs-lib

jsBIP39 - https://github.com/iancoleman/jsbip39

sjcl - https://github.com/bitwiseshiftleft/sjcl

jQuery - https://jquery.com/

Twitter Bootstrap - http://getbootstrap.com/