What is the Dancing Men cipher?

It is a substitution cipher from the Sherlock Holmes story The Adventure of the Dancing Men, where each letter of the alphabet is drawn as a little stick figure in a different pose, and a flag held by a figure marks the end of a word.

Are these the exact original drawings?

No. The original cipher is hand-drawn art with no Unicode equivalent. This tool uses a consistent one-to-one glyph mapping as a practical stand-in so you can encode and decode reliably online.

How are word breaks shown?

In the story, the figure for the last letter of each word holds a small flag. Here a flag marker is appended to the final figure of every word so word boundaries survive encoding and decoding.

How did Holmes break it?

Holmes used frequency analysis: the most common figure was likely E, and short repeated patterns hinted at common words. Because it is a simple substitution cipher, this attack works in general.

Is my text uploaded anywhere?

No. Both encoding and decoding run entirely in your browser and nothing is sent to any server.

Dancing Men Cipher (Sherlock Holmes)

The Dancing Men cipher comes from Arthur Conan Doyle’s Sherlock Holmes tale The Adventure of the Dancing Men, in which a series of stick-figure drawings turns out to be a hidden message. Because the original figures are hand-drawn art, this tool uses a consistent Unicode stand-in: a fixed, reversible glyph for each letter, plus a flag marker for word ends. Everything runs in your browser.

How it works

Each of the 26 letters maps to one distinct glyph. The mapping is one-to-one and fixed, so encoding then decoding always round-trips back to the original text. As in the story, the last figure of each word carries a flag — here represented by an appended flag marker — so spaces are preserved through the cipher.

Decoding simply reverses the lookup: strip any flag marker, find the letter whose glyph matches, and rebuild the words. Characters with no mapping (digits, punctuation) pass through unchanged.

Tips and example

Holmes cracked the real cipher with frequency analysis — the single most common figure was almost certainly the letter E, and short, frequently repeated figure groups suggested common short words. The same logic applies to any simple substitution cipher.

To try it, type a phrase and switch to Encode; you will get a row of figures with flags at word ends. Paste those figures back with Decode selected to recover the text. This is a puzzle and storytelling tool, not real encryption — a substitution cipher offers no protection against analysis.