Pigpen Cipher Encoder
Encode messages in the Pigpen cipher, the geometric secret alphabet of the Freemasons, seen in Assassin's Creed and Gravity Falls. Instant encoder with full key.
About Pigpen
The Pigpen cipher replaces letters with fragments of a grid, each symbol is the “pen” that letter sits inside. Used by Freemasons in the 18th century to keep records private, it has become the most beloved secret alphabet in history, appearing in Assassin’s Creed, Gravity Falls, escape rooms and a thousand childhood notebooks.
Two tic-tac-toe grids and two X-grids hold all 26 letters; dots distinguish the second set. Once you learn the key below, you can read Pigpen at a glance, which is exactly why it makes such satisfying puzzle material.
- Also called the Masonic cipher, Napoleon cipher and tic-tac-toe cipher.
- Gravity Falls used Pigpen (among other ciphers) in its end-credit cryptograms.
- A Pigpen-inscribed tombstone from 1794 still stands in Trinity Church, New York.
- It’s a pure substitution cipher, trivially crackable, endlessly charming.
The Pigpen Key, A to Z
Hover or tap any letter to study it. This chart is the full key used by the translator above.
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