ASCII Converter Tool
Convert between text and ASCII/Unicode codes. Multiple output formats supported.
Options
Text Input
Code Output
-
※ Non-ASCII characters shown as Unicode code points
Options
Code Input
Control Characters (0-31, 127)
Control characters are non-printable special characters (reference only)
Printable Characters (32-126)
Click to insert
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How to Use
1
Select mode
Choose "Text → Code" or "Code → Text" tab.
2
Set output format
Select decimal, hex, binary, or octal. Configure separator and prefix.
3
View results
Copy results or check character details in the table.
About This Tool
A free online tool to convert between text and ASCII/Unicode codes. Useful for programming, data processing, and learning character encoding. Supports multi-byte characters like Japanese via Unicode code points.
Features
- Bidirectional conversionConvert text to code and code to text.
- Multiple formatsChoose from decimal, hex, binary, or octal.
- Character breakdownView each character's code in a detailed table.
- ASCII tableBrowse all 128 ASCII characters. Click to insert.
Use Cases
- Check character codes in programming
- Debug data transmission
- Learn character encoding
- Analyze binary data
- Identify control characters
FAQ
What's the difference between ASCII and Unicode?
ASCII uses 7 bits for 128 characters (English letters, numbers, symbols). Unicode supports over 1 million characters including Japanese, emojis, and more.
Can I convert Japanese text?
Yes. Non-ASCII characters like Japanese are converted using Unicode code points (U+XXXX format).
What are control characters?
ASCII codes 0-31 and 127 are control characters like newline (LF), tab (HT), and carriage return (CR) used for device control.
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