What is the difference between control and printable ASCII characters?

Codes 0–31 and 127 are control characters such as NUL, tab, line feed (LF) and escape (ESC) that have no visible glyph. Codes 32–126 are printable characters including space, digits, letters and punctuation.

How do I convert an ASCII character to hex?

Find the character in the table and read the Hex column. For example, the letter A is decimal 65, which is 0x41 in hexadecimal.

Is the data I search sent anywhere?

No. The whole ASCII table and the search run entirely in your browser, so nothing you type is uploaded.

ASCII Table Reference

All 128 ASCII codes in decimal, hex, octal and binary — searchable.

ASCII table reference — decimal, hex, octal, binary

A complete reference for the standard 7-bit ASCII set, codes 0 to 127. Every row shows the decimal, hexadecimal, octal and binary value alongside the character itself and a short description — including control-code names like NUL, LF, CR and ESC.

Filter to printable or control characters, or search by number, hex, character or name. Everything runs in your browser; nothing is uploaded.