ASCII Converter
Convert between ASCII characters and their decimal, hexadecimal, and binary code values. Free online ASCII table converter.
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What is ASCII Converter?
ASCII (American Standard Code for Information Interchange) is a character encoding standard that assigns numbers 0-127 to characters. For example, 'A' is 65, 'a' is 97, '0' is 48. The first 32 codes (0-31) are control characters (like newline, tab). ASCII is the foundation of modern text encoding like UTF-8.
How to Use
- Choose Text to ASCII or ASCII to Text mode
- In Text to ASCII mode: type text and see a table of each character's decimal, hex, and binary values
- In ASCII to Text mode: enter decimal or hex codes (e.g. 65 66 67 or 0x41 0x42 0x43) separated by spaces or commas
- Results appear instantly as you type
Examples
Text to ASCII codes
ASCII codes to text
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Frequently Asked Questions
What is the ASCII table?
The ASCII table maps 128 characters (0-127) to numeric codes. Codes 0-31 are control characters (non-printable). Code 32 is space. Codes 33-126 are printable characters (letters, digits, punctuation). Code 127 is DEL.
Can I enter hexadecimal values?
Yes. Prefix hex values with 0x (e.g., 0x41 for 'A'). The tool automatically detects the format. Decimal and hex values can be mixed in the same input, separated by spaces or commas.
What's the difference between ASCII and Unicode?
ASCII covers 128 characters (English letters, digits, basic punctuation). Unicode extends this to over 140,000 characters covering all world scripts. UTF-8 is the most common Unicode encoding and is backward-compatible with ASCII.