ASCII code for left bracket
91
Left square bracket — [
| Decimal | 91 |
| Hexadecimal | 0x5B |
| Octal | 0133 |
| Binary | 01011011 |
| HTML entity | [ |
What it is
Left square bracket is one of the 95 printable ASCII characters, the set every text encoding in common use still agrees on. UTF-8 encodes it as the single byte 91, which is why ASCII text is also valid UTF-8.
The full entry
ASCII 91 in full — the code point page, with what sits either side of it and how the character is encoded elsewhere.
Frequently asked questions
What is the ASCII code for left bracket?
The ASCII code for left bracket is 91 in decimal, 0x5B in hexadecimal and 0133 in octal.
What is left bracket in binary?
01011011 — eight bits, though ASCII only defines seven, so the top bit is always zero.
Is left bracket a printable character?
Yes. Left square bracket is in the printable range, codes 32 to 126, which is everything ASCII can put on a screen.
Other characters
- ASCII code for backslash — 92
- ASCII code for right bracket — 93
- ASCII code for caret — 94
- ASCII code for underscore — 95
- ASCII code for backtick — 96
- ASCII code for lowercase a — 97
- ASCII code for lowercase b — 98
- ASCII code for lowercase c — 99
- ASCII code for lowercase d — 100
- ASCII code for lowercase e — 101
- ASCII code for lowercase f — 102
- ASCII code for lowercase g — 103
Every character by name · The ASCII table · Text to binary converter