ASCII Converter
Free online text to ASCII code translator. Convert any text to decimal, hex, and binary codes with a character breakdown table and distribution charts.
About This Calculator
The ASCII Converter is a free online tool that instantly translates each character of your text into its corresponding ASCII code in decimal, hexadecimal, and binary formats. Whether you are learning how computers represent text, debugging data transmission, working with embedded systems, or simply curious about character encoding, this converter provides a clear character-by-character breakdown with visual charts.
Each character in your input is analyzed and displayed alongside its ASCII code in multiple numeric formats. The tool also categorizes characters by type — letters, digits, punctuation, spaces, and control characters — giving you a complete picture of your text's composition at a glance.
How ASCII Encoding Works
ASCII (American Standard Code for Information Interchange) is a character encoding standard developed in the 1960s that assigns a unique numeric value between 0 and 127 to each character. The standard defines 33 non-printable control characters (codes 0-31 and 127) for functions like line feed, carriage return, and tab, and 95 printable characters (codes 32-126) including uppercase and lowercase letters, digits 0-9, punctuation marks, and the space character.
When you enter text into the converter, each character is processed individually:
- Decimal code: The raw numeric value (e.g., A = 65)
- Hexadecimal code: The base-16 representation (e.g., A = 41)
- Binary code: The base-2 representation (e.g., A = 01000001)
Common Use Cases
- Programming and debugging: Verify character codes in your data streams and protocols.
- Embedded systems: Check ASCII values for serial communication with microcontrollers.
- Networking: Inspect raw data packets and protocol headers that use ASCII encoding.
- Education: Learn how computers represent text at the fundamental level.
- Data analysis: Understand the character composition of text files and strings.
Frequently Asked Questions
What is an ASCII Converter?
An ASCII Converter is a free online tool that converts text characters into their corresponding ASCII codes in decimal, hexadecimal, and binary formats. It shows a character-by-character breakdown table and provides character type distribution charts for letters, digits, punctuation, spaces, and control characters.
How do I convert text to ASCII codes?
Enter or paste your text into the input field and click the Convert button. The tool will display each character alongside its decimal, hex, and binary ASCII code. For example, the letter A has decimal code 65, hex code 41, and binary code 01000001.
What is the ASCII table?
ASCII (American Standard Code for Information Interchange) is a character encoding standard that assigns numeric codes from 0 to 127 to characters. Codes 0-31 are control characters (like newline and tab), 32 is space, and 33-126 are printable characters including letters, digits, and punctuation marks.
What is the difference between ASCII and Unicode?
ASCII uses 7 bits to represent 128 characters (0-127). Unicode is a superset of ASCII that supports over 140,000 characters from all world scripts. The first 128 Unicode code points (U+0000 to U+007F) are identical to ASCII, making ASCII text valid Unicode text.
Is this ASCII converter free to use?
Yes, this ASCII converter is completely free to use with no registration or account required. All conversions happen instantly in your browser — no data is sent to any server.
Can I share my ASCII conversion results?
Yes, the URL saves your input text so you can share the link and others will see the same conversion. You can also copy individual codes from the breakdown table.
What character types does the ASCII converter show?
The converter categorizes each character as Letter (A-Z, a-z), Digit (0-9), Punctuation (symbols like ! @ #), Space, or Control (non-printable characters like newline or tab). It provides a bar chart and pie chart showing the distribution of these character types in your text.
What are extended ASCII characters?
Extended ASCII refers to 8-bit character encodings that add 128 additional codes (128-255) beyond standard ASCII (0-127). These codes represent characters like accented letters, currency symbols, and special typographic marks. Common extended ASCII encodings include Windows-1252 and ISO 8859-1.