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Tap Code Translator

Convert text to and from tap code, using a 5×5 Polybius square.

3 characters
30 characters

Tap Code Grid

1 2 3 4 5
1 A
. .
B
. ..
C/K
. ...
D
. ....
E
. .....
2 F
.. .
G
.. ..
H
.. ...
I
.. ....
J
.. .....
3 L
... .
M
... ..
N
... ...
O
... ....
P
... .....
4 Q
.... .
R
.... ..
S
.... ...
T
.... ....
U
.... .....
5 V
..... .
W
..... ..
X
..... ...
Y
..... ....
Z
..... .....

What Is Tap Code?

Tap code is a way of communicating words and messages entirely with tapping sounds, based on a 5×5 square grid. The grid has 25 letters, with C and K sharing the same cell. Each letter is its row number in taps, a short pause, then its column number in taps. For example, S = row 4, column 3 → .... ... (4 taps, pause, 3 taps).

Tap code is similar to Morse code but simpler, since it needs just one rhythmic sound. It developed as a way for American prisoners to communicate during the Vietnam War.

What Is the Tap Code Translator?

This tool converts text to tap code and back. Use it to learn the code and practice sending coded messages to friends.

Letters within a word are separated by | and words by . Each letter appears as two dot groups for the row and column taps.

How to Use the Tap Code Translator

The translator uses the 5x5 grid shown below.

  1. Encode a message: Type or paste a message in the Text box to see its translation in the Tap Code box.
  2. Decode a tapped message: Paste tap code (letters separated by |, words by /) in the Tap Code box to decode.
  3. Use your message: Use the clipboard icon to copy either box.

Which Is Better, Tap Code or Morse?

Both systems use sound to encode a message, but the best choice depends on your constraints.

  • Tap code is easier to learn and doesn't take any special equipment, but it only works if you're close to someone (communicating through a wall or pipe, for example). You'll also need to find a practice partner, as it's less common than Morse.
  • Morse code is more widespread and can work across distances with audio, radio, or light.

Morse code will take longer to master, but it has a much wider user base, so you can easily find partners and other fans to chat with.

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