Wondering whether your unique 12-word seed phrase could be generated twice?

Here’s a factoid to blow your mind,

There are 2,048 words in the standardised BIP-39 word list. That’s the list all seed phrases are generated from.

The number of possible combinations for a 12-word seed phrase using that list of 2048 words is:

5,444,517,870,735,015,415,413,993,718,908,291,383,296

In other words, that’s the total number of unique 12-word combinations that can be created.

So, you can see it’s extremely unlikely for the same combination to be generated more than once by chance.

Hope this helps.