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BIP39 Seed Phrase Mnemonics Generator – offline & online tool

Mnemonic code converter.


Easily create your own BIP39 compatible seed phrase (mnemonic)

This tool will allow you to easily create your own BIP39 compatible seed phrase (mnemonic)
with cryptographically secure random number generator.

You can think of this tool as a hardware or software wallet opened up where you can tinker with stuff inside and do everything manually.

If you found this tool useful, you can tip us or buy a metal crypto wallet from our store.

BIP39 – Mnemonic Code

BIP39 Seed Phrase Generator

v1.0.2

Generate a random seed phrase (mnemonic): words

Coinplate Alpha - ultimate metal crypto wallet

Possible use cases

  • Randomly compute a seed phrase safely if you need to. Generate 12 or 24 words seed phrase, and other lengths.
  • Check if your seed phrase is correct (you will receive a notification if a given word is not from the list.
  • You can check all your individual addresses without a wallet, if you would need that.
  • Compute your coins addresses plus private keys so you could retrieve funds manually by using Bip44 standard or other. Could be useful if you lose your wallet and are unable to get one.
  • Create a new bip39/44 wallet to create a coin address and transfer your coins ASAP, then later input the seed in a wallet and restore. Could be useful in a bad case of a compromised wallet.
  • Generate some truly random seed phrase with your own entropy source if you would like, for example, you can roll your own dice yourself.
  • See how things work inside your hardware or software wallet. It is easy to see here that your seed phrase is also an instruction set for setting up addresses and private keys (i.e. Bip44). You can see how keys and addresses are computed from the seed.

Advanced mode features

  • convert mnemonic code to seed (mnemonic code converter),
  • calculate derivation paths/addresses from mnemonics,
  • use your own entropy to create seed phrase.

Security notes & offline use:

You can use this tool 100% offline. For security it is preferable to use offline fresh system install or system on live usb. Download standalone offline file below and open it in a browser.

Remember to have a proper backup of your seed phrase. You can secure your seed phrase on solid seed phrase storage tool like Coinplate.

Read more

With BIP39 recovery phrase (also called mnemonic phrase), user can backup and recover Bitcoin and other cryptocurrency wallets without the need to use complicated private keys.

The BIP39 protocol uses a list of 2048 carefully chosen english words. Although the lists in different languages exists, it is usually not recommended to use them because most wallets do support only english words. Read more about BIP39 standard.

related: BIP39 Wordlist , BIP39 compatible wallets list

License

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.

License details

The MIT License (MIT) Copyright (c) 2022 Coinplate

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

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.

Source code

You can check the full source code by downloading the offline version file above or visit our github and download from there.

Credits

This tool based on Ian Coleman's mnemonics code converter.

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