Mnemonic Code Converter

v0.4.2

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 contains a checksum).

For more info see the BIP39 spec.

Generate a random mnemonic: words, 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

Time To Crack

Event Count

Entropy Type

Bits Per Event

Raw Entropy Words

Total Bits

Filtered Entropy

Raw Binary

Binary Checksum

Word Indexes

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

Show entropy details

Hide all private info

Mnemonic Language

English 日本語 Español 中文(简体) 中文(繁體) Français Italiano 한국어 Čeština

BIP39 Mnemonic

BIP39 Split Mnemonic

BIP39 Passphrase (optional)

BIP39 Seed

Coin

BIP32 Root Key

Derivation Path

For more info see the BIP44 spec.

Purpose

Coin

Account

External / Internal

The account extended keys can be used for importing to most BIP44 compatible wallets, such as mycelium or electrum.

Account Extended Private Key

Account Extended Public Key

The BIP32 derivation path and extended keys are the basis for the derived addresses.

BIP32 Derivation Path

For more info see the BIP32 spec

Client

BIP32 Derivation Path

Bitcoin Core

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

For more info see the Bitcoin Core BIP32 implementation

Multibit

Use path m/0'/0. For change addresses use path m/0'/1.

For more info see MultiBit HD

Block Explorers

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

Can be used with: blockchain.info

For more info see the BIP49 spec.

Purpose

Coin

Account

External / Internal

The account extended keys can be used for importing to most BIP49 compatible wallets.

Account Extended Private Key

Account Extended Public Key

The BIP32 derivation path and extended keys are the basis for the derived addresses.

BIP32 Derivation Path

For more info see the BIP141 spec

BIP32 Derivation Path

Script Semantics

For more info see the BIP84 spec.

Purpose

Coin

Account

External / Internal

The account extended keys can be used for importing to most BIP84 compatible wallets.

Account Extended Private Key

Account Extended Public Key

The BIP32 derivation path and extended keys are the basis for the derived addresses.

BIP32 Derivation Path

Derived Addresses

Note these addresses are derived from the BIP32 Extended Key

Encrypt private keys using BIP38 and this password: Enabling BIP38 means each key will take several minutes to generate.

Use hardened addresses

Table
CSV

Path	Address	Public Key	Private Key

Show starting from index (leave blank to generate from next index)

More info

BIP39 Mnemonic code for generating deterministic keys

BIP32 Hierarchical Deterministic Wallets

BIP44 Multi-Account Hierarchy for Deterministic Wallets

BIP49 Derivation scheme for P2WPKH-nested-in-P2SH based accounts

Entropy

Entropy values should not include the BIP39 checksum. This is automatically added by the tool.

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 street address, keyboard mashing, or anything you think is random, because chances are overwhelming it isn't random enough for the needs of this tool.

Do not store entropy.

Storing entropy (such as keeping a deck of cards in a specific shuffled order) is unreliable compared to storing a mnemonic. Instead of storing entropy, store the mnemonic generated from the entropy. Steganography may be beneficial when storing the mnemonic.

The random mnemonic generator on this page uses a cryptographically secure random number generator. The built in random generator 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 the generate button will not work. In that case you might choose to use your own source of entropy.

You are not a good source of entropy.

License

Please refer to the software license for more detail.

The software is provided "as is", without warranty of any kind, express or implied, including but not limited to the warranties of merchantability, fitness for a particular purpose and noninfringement. In no event shall the authors or copyright holders be liable for any claim, damages or other liability, whether in an action of contract, tort or otherwise, arising from, out of or in connection with the software or the use or other dealings in the software.

Alternative Tools

This tool is interoperable with any BIP39 wallet.

Some similar tools to this one (ie not consumer wallets) are

https://bip32jp.github.io/english/

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 the file from the repository - https://github.com/iancoleman/bip39

This project is 100% open-source code

Get the source code from the repository - 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/