Char to ASCII / Unicode Converter for Code Points Online
The Char to ASCII / Unicode converter turns one or more characters into a detail card for each character. Each card lists decimal, hexadecimal, octal, and binary values, an HTML entity, Unicode code point, UTF-8 bytes, and byte count. Control characters also show standard names, while emoji and astral characters are handled by codePointAt.
The Char to ASCII / Unicode converter shows the numeric and encoded representations of one character or several characters. Each character gets its own detail card, making it easier to inspect a character’s decimal, hexadecimal, octal, and binary values alongside its HTML entity, Unicode code point, UTF-8 byte sequence, and byte count.
The tool uses codePointAt to handle characters, including emoji and astral characters, correctly. For control characters, the card also displays the standard name when available, such as NUL, LF, ESC, or DEL. These details help you identify what a character represents across different common notations without looking up each value separately.
ASCII is a character encoding with a limited set of characters, while Unicode provides code points for a much broader range of characters. UTF-8 represents Unicode text as bytes, and HTML entities provide a way to represent characters in HTML. Comparing these values can help when debugging text, preparing documentation, or working with systems that expect a particular representation.
The conversion runs entirely in your browser: your input is processed on your device and is not uploaded, stored, or sent to a server. Once the page has loaded, the tool works offline without a server dependency. It can help developers and DevOps engineers check character values before using them in code, documentation, tickets, or other tools.
Step 1: Enter one character or paste several into the Character input. The tool creates a separate detail card for each character.
Step 2: Review the values on each card, including decimal, hex, octal, binary, the HTML entity, and the Unicode code point.
Step 3: Check the UTF-8 byte sequence and byte count when you need to understand how a character is represented in UTF-8.
Step 4: For control characters, look for the standard name, such as NUL, LF, ESC, or DEL. Copy the ASCII result you need for your code or documentation.
Use case: Move character data into a system that only accepts ASCII by checking its numeric representation before using it.
Use case: Verify that an ASCII value you received matches the original character by comparing the character’s displayed values.
Use case: Prepare character details for documentation, a ticket, or a commit message without manually looking up each code point.
Use case: Sanity-check a character conversion before using the result in code.
Use case: Inspect an emoji or another astral character to see its Unicode code point and UTF-8 byte sequence.
Use case: Identify a control character in text by checking its standard name and numeric values.