ASCII 29
ASCII 29 is Group Separator — the control character GS.
Every representation
| Character | GS (not printable) |
| Name | Group Separator |
| Decimal | 29 |
| Hexadecimal | 0x1D |
| Octal | 0035 |
| Binary | 00011101 |
| HTML entity |  |
| Escape sequence | \x1D |
| Unicode | U+001D |
| Keyboard | Ctrl+] |
| Group | Control character |
What it is for
Divides groups within a file. Still used in GS1 barcode data.
Where the number comes from
Codes 0 to 31 were reserved for control: instructions to a teleprinter rather than characters to print. Code 29 is Ctrl+] because the Ctrl key was originally wired to clear the top two bits of whatever you typed, mapping the letter ] at 93 down to 29.
Frequently asked questions
What is ASCII 29?
Group Separator (GS), a control character. In hexadecimal it is 0x1D, in octal 0035, and in binary 00011101.
How do I type ASCII 29?
Press Ctrl+] in a terminal. In a string literal you can write it as \\x1D in most languages.
Is ASCII 29 printable?
No. Codes 0 to 31 and 127 are control characters — they were instructions to a teleprinter rather than marks on paper, and most terminals show nothing for them.
Nearby codes
- ASCII 22 — SYN
- ASCII 23 — ETB
- ASCII 24 — CAN
- ASCII 25 — EM
- ASCII 26 — SUB
- ASCII 27 — ESC
- ASCII 28 — FS
- ASCII 30 — RS
- ASCII 31 — US
- ASCII 32 — space
- ASCII 33 — !
- ASCII 34 — "
- ASCII 35 — #
- ASCII 36 — $
Full ASCII table · Text to binary converter · Number base converter