ASCII 11
ASCII 11 is Vertical Tab — the control character VT.
Every representation
| Character | VT (not printable) |
| Name | Vertical Tab |
| Decimal | 11 |
| Hexadecimal | 0x0B |
| Octal | 0013 |
| Binary | 00001011 |
| HTML entity |  |
| Escape sequence | \\v |
| Unicode | U+000B |
| Keyboard | Ctrl+K |
| Group | Control character |
What it is for
Advanced to the next vertical tab stop. Almost never used; it survives mainly as a character that breaks naive parsers.
Where the number comes from
Codes 0 to 31 were reserved for control: instructions to a teleprinter rather than characters to print. Code 11 is Ctrl+K because the Ctrl key was originally wired to clear the top two bits of whatever you typed, mapping the letter K at 75 down to 11.
Frequently asked questions
What is ASCII 11?
Vertical Tab (VT), a control character. In hexadecimal it is 0x0B, in octal 0013, and in binary 00001011.
How do I type ASCII 11?
Press Ctrl+K in a terminal. In a string literal you can write it as \\v or \\x0B in most languages.
Is ASCII 11 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 4 — EOT
- ASCII 5 — ENQ
- ASCII 6 — ACK
- ASCII 7 — BEL
- ASCII 8 — BS
- ASCII 9 — HT
- ASCII 10 — LF
- ASCII 12 — FF
- ASCII 13 — CR
- ASCII 14 — SO
- ASCII 15 — SI
- ASCII 16 — DLE
- ASCII 17 — DC1
- ASCII 18 — DC2
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