CIPHERNAUT
csen
Cipher catalogue
EncodingDifficulty: Medium

ASCII code (decimal)

Replace every character with its number in the computer table: A is 65, B is 66, a is 97.

Try it

27 characters

Result · ASCII code (decimal)

83 101 99 114 101 116 32 109 101 115 115 97 103 101 32 102 111 114 32 116 104 101 32 99 108 117 98

How it works

  1. 1A computer gives every character a number. Capital A is 65, B is 66 … Z is 90.
  2. 2Lowercase letters start at 97: a is 97, b is 98. A space is 32.
  3. 3Write the numbers one after another, separated by a space or comma: AZ is 65 90.
  4. 4Accented letters take two numbers: č is 196 141.
  5. 5To decode, look up each number in the ASCII table.

Example

HELLO

72 69 76 76 79

Did you know

ASCII was first published in 1963 by the American Standards Association (now ANSI). It has 128 characters, 95 of them printable, and no accents. For other languages we now use UTF-8, sketched in September 1992 by Ken Thompson and Rob Pike; its first 128 characters match ASCII, which is why A is still 65.

Try to decode

This message is encrypted with ASCII code (decimal) using the default settings:

67 79 68 69 83 32 65 82 69 32 78 85 77 66 69 82 83

Hint

Capital letters start at 65 (A). A space is 32.

Show solution

CODES ARE NUMBERS

More ciphers in this category