Question 1

What is a BIP39 mnemonic?

Accepted Answer

A BIP39 mnemonic is a sequence of words that encodes the entropy used to generate a wallet's master key. It's the standard for wallet backups across all major cryptocurrency wallets.

Question 2

How many words should I use?

Accepted Answer

12 words (128-bit security) is sufficient for most purposes. 24 words (256-bit security) provides extra security margin. We support 12, 15, 18, 21, and 24 words.

Question 3

Are generated mnemonics secure?

Accepted Answer

Yes. They are generated using cryptographically secure randomness. However, they are intended for testing — never use generated mnemonics for real wallets.

BIP39 Mnemonic Generator

About this tool

BIP39 Mnemonic Generator — FAQ

Ready to Start?

BIP39 Mnemonic Generator

About this tool

BIP39 Mnemonic Generator — FAQ

Ready to Start?