Q
Uppercase Q
PrintableASCII 81 | Hex 0x51 | U+0051
ASCII Code
Decimal
81
Hexadecimal
0x51
Octal
121
Binary
0101 0001
URL Escape
%51
How to Type
Windows Alt CodeAlt + 81
HTML Entity
Q
Unicode InputU+0051
Frequently Asked Questions
What is ASCII code 81?
ASCII code 81 represents the Uppercase Q character. In hexadecimal it is 0x51, in binary 0101 0001, and in octal 121. It is a printable character that appears as "Q" in text.
How do I type ASCII 81 on a keyboard?
On Windows, hold Alt and type 81 on the numeric keypad. On Mac, you can use the Character Viewer (Edit > Emoji & Symbols). In HTML, use the entity Q or Q.