Extended ASCII Table

About Extended ASCII Table

This Extended ASCII table lists character codes from 128 to 255 in decimal, hexadecimal, and character form. The displayed characters depend on your system's encoding—modern systems use UTF-8, while the table shows Windows-1252 (CP-1252) characters for the 128-159 range and ISO-8859-1 for 160-255.

It is useful for encoding references, special character lookups, debugging character display issues, and understanding legacy file formats that predate Unicode.

ASCII vs Extended ASCII vs Unicode

Windows-1252 Control Range (128-159)

Unlike ISO-8859-1 which defines 128-159 as C1 control codes, Windows-1252 uses this range for printable punctuation and symbols.

Windows-1252 printable characters in 128-159 range:

128 €  Euro sign           144 [unused]
129 [unused]                145 '  Left single quote
130 ‚  Single low quote     146 '  Right single quote
131 ƒ  Latin small f hook   147 "  Left double quote
132 „  Double low quote     148 "  Right double quote
133 …  Horizontal ellipsis  149 •  Bullet
134 †  Dagger               150 –  En dash
135 ‡  Double dagger        151 —  Em dash
136 ˆ  Modifier circumflex  152 ˜  Small tilde
137 ‰  Per mille            153 ™  Trade mark sign
138 Š  S caron              154 š  Small s caron
139 ‹  Single left angle    155 œ  OE ligature
140 Π OE ligature          156 [unused]
141 [unused]                157 [unused]
142 Ž  Z caron              158 ž  Small z caron
143 [unused]                159 Ÿ  Y with diaeresis

Common Extended ASCII Symbols (160-255)

Character Encoding Conversion

JavaScript:
  // Encode string to bytes in specific encoding
  const encoder = new TextEncoder();  // UTF-8 only
  const bytes = encoder.encode("Hello");

  // Decode bytes from specific encoding
  const decoder = new TextDecoder('windows-1252');
  const text = decoder.decode(bytes);

Python:
  # String to bytes (encode)
  text = "Hello"
  utf8_bytes = text.encode('utf-8')
  latin1_bytes = text.encode('latin-1')

  # Bytes to string (decode)
  decoded = latin1_bytes.decode('latin-1')
  text = utf8_bytes.decode('utf-8')

Node.js Buffer:
  // Convert between encodings
  const buf = Buffer.from(input, 'latin1');
  const utf8String = buf.toString('utf8');

Command line (iconv):
  iconv -f ISO-8859-1 -t UTF-8 input.txt > output.txt
  iconv -f CP1252 -t UTF-8 windows.txt > unicode.txt

Why UTF-8 Replaced Extended ASCII