BIP39 Dice Worksheet
Enter 256 entropy bits. The final eight checksum bits, 24 word indexes, and BIP39 words are calculated locally in this page.
Offline worksheet: this file uses no network connection. For real funds, use it only on a trusted offline computer and never share the resulting words.
How to roll a D8
1000
2001
3010
4011
5100
6101
7110
8111
- Roll the eight-sided die 86 times.
- Convert each result to its three-bit value shown beside it.
- Enter the bits from left to right, continuing on the next row.
- The 86 rolls produce 258 bits. Discard the final two, leaving 256 entropy bits.
- Rows 1–23 use all 11 cells. In row 24, enter only the first three bits; the yellow-underlined eight cells are the calculated checksum.
Value → BIP39 word
For every row, multiply each bit by the numbered value above it, then add the results. A 0 contributes nothing, so you can simply add the headings wherever the bit is 1.
11000111011 = 1×1024 + 1×512 + 1×32 + 1×16 + 1×8 + 1×2 + 1×1 = 1595 → shuffle
The total is the row’s zero-based index in the official 2,048-word BIP39 English word list. For example: 0 = abandon, 1 = ability.
Downloads
| # | 1024 | 512 | 256 | 128 | 64 | 32 | 16 | 8 | 4 | 2 | 1 | Value | Word |
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