Difference Between ANSI and ASCII (With Table)

Standard encoding formats are required for communication via digital devices, which has resulted in the creation of numerous types of encoding systems. Both ANSI and ASCII are widely used and very ancient character encoding schemes. Despite the fact that most people believe these two systems are identical, they are not.


The main difference between ANSI and ASCII is that the maximum amount of characters that they can represent. An 8-bit pattern is used for each character in the ANSI coding system, which is connected to Microsoft. The short form ANSI is based on the draughts presented and does not correspond to the official ANSI standard, whereas, The ASCII character encoding technique uses a unique 7-bit binary number to identify each character. As a result, using ASCII code, a total of 2^7 or 128 characters may be specified.

Difference Between ANSI and ASCII

The American National Standards Institution (ANSI) represents a standard code page for systems such as Windows. This is a Microsoft-related coding method that employs an 8-bit sequence for each letter. This shortened version of the ANSI standard was based on draughts provided by the public and did not conform to the official ANSI standard. However, because of Microsoft’s history, the name is still appropriate.

When ASCII was designed, it only employed 7 bits to allow for a total of 128 character combinations. It was designed for the English language and has proven to be capable of storing all letters, numbers, special characters, symbols, and non-printed characters.

Comparison Table Between ANSI and ASCII

Parameters of ComparisonANSIASCII
Representation by BitsEntire byte or 8-bits7-bits used.
CharactersIt consists of 256 characters.It consists of half of ANSI characters which is 128 in numbers.
ConsistencyThese aren’t identical in the system.Every system has exactly the same ASCII code points.
Span of lifeThe short life and rarely used now.Long life and still in use.
DecodeIt is difficult to decode in Unicode.It simply decoded in Unicode.

What is ANSI?

The American National Standards Institution (ANSI) is a general word for a system’s standard code page, such as Windows. It’s a Microsoft-related coding method in which each character is represented by an 8-bit pattern. The short form ANSI is based on the draughts presented and does not correspond to the official ANSI standard. However, because of Microsoft’s history, the term is still widely recognized.

To get over the limits, the ASCII code is modified with an extra 128 characters. Thus, the ANSI standard allows for the representation of up to 28 or 256 characters. ANSI makes use of code pages with several character sets. The American National Standard Institute (ANSI) is a non-profit organization that publishes standards. The fundamental goal was to give all government institutions a consistent identity for geographical entities.

Microsoft Windows was published with the ANSI character set for the first time in 1985. In Windows ME, ANSI code pages are used primarily. They may also be used with Windows NT. On Windows/U.S., it’s called Windows-1252. In addition, in Notepad++, ANSI is the default coding format. It’s a typical way of encoding Latin letters. Common ANSI-based software includes Unix and MS-DOS.

What is ASCII?

ASCII contains telegraphic codes. Bell Data Services has employed ASCII commercially for the first time, pushing a 7-bit teleprinter code. On October 6, 1960, the development cycle began in earnest. The founding father of ASCII was Bob Bemer. The main goal was to expand computer connectivity in a language that everyone could understand.

ASCII was created with exactly seven bits, allowing for a maximum of 128 character combinations. It had to be written in English, and it had to be good enough to hold all of the letters, numerals, special characters, symbols, and unprinted characters. However, because dialects differ, problems may arise when the paper is sent halfway over the world, for as from Japan to the United States. ASCII isn’t a problem because it’s the same anywhere you are currently on the planet.

For example, in ASCII, “C” is denoted by the decimal 67, whereas “c” is denoted by the decimal 99. As a result, each letter preserves a 32-character gap. The 128th character in ASCII denotes the “Delete” button.

We absolutely use ASCII codes when typing, even if we aren’t familiar with standard keyboards. The majority of the time, a numerical ASCII code is utilized to identify each letter on the keyboard. ASCII codes are also utilized in e-mail transmission, text files, graphic arts, c programming, and other applications. A method for ASCII conversion is also used by UNIX or Windows-style operating systems.

Main Differences Between ANSI and ASCII

  1. ANSI includes the symbols required for the drawing, whereas ASCII contains the numerical representation.
  2. The ANSI code points aren’t set in stone, but ASCII points are universal.
  3. Although ANSI is a versatile encoding method, ASCII is the most widely used.
  4. The ANSI standard is rarely utilized, although ASCII is.
  5. Although ANSI is not a standardized format, ASCII is.


Both ASCII and ANSI were replaced with the vastly more comprehensive Unicode. The fundamental difference between ANSI and ASCII in this regard is reverse compatibility. The first 128 Unicode characters are identical to ASCII. As a result, you may quickly access an ASCII-encoded text in Unicode. It may not always apply to ANSI because it uses many code sheets. The idea that standard-setters must evaluate the linguistic and international character that should be included is critical to the creation of a curated character set.

The ANSI encoding method is a superset and modification of ASCII. ANSI was created to overcome the limitations of the ASCII character set, but it was later abandoned due to its incompatibility. Despite this, ASCII codes are utilized on keyboards all around the globe because they give a common and standard language, English. As a result, programmers and software developers choose ASCII because it is simple to understand.


  1. https://link.springer.com/chapter/10.1007/3-540-36592-3_29
  2. https://link.springer.com/article/10.1023/A:1004740203542