In Unicode the majuscule|capital O is codepoint U+004F and the minuscule|lowercase o is U+006F.
The ASCII code for capital O is 79 and for lowercase o is 111; or in Binary numeral system|binary 01001111 and 01101111, correspondingly.
The EBCDIC code for capital O is 214 and for lowercase o is 150.
The numeric character references in HTML and XML are "<tt>&#79;</tt>" and "<tt>&#111;</tt>" for upper and lower case respectively.
Distinguishing O from zero
:''See 0 (number)#Distinguishing zero from O|0: Distinguishing zero from O''
Meanings of O
:''See O (disambiguation).''
Similar letters and symbols
*0 (zero)
*Oh
*ò o grave accent|grave (0x00F2)
*ó o acute accent|acute (0x00F3)
*ô o circumflex (0x00F4)
*õ o tilde (0x00F5)
*ö o diaeresis (0x00F6)
*ø o stroke (0x00F8)
*Å o macron (0x014D)
*Å o breve (0x014F)
*Å‘ o double acute accent|double acute (0x0151)
*Å“ oe ligature (0x0153)
*Æ¡ o horn (0x01A1)
*Ç’ o caron (0x01D2)
*Ç« o ogonek (0x01EB)
*Ç o ogonek macron (0x01ED)
*Ç¿ o stroke acute (0x01FF)
*È o double grave accent|double grave (0x020D)
*È o inverted breve (0x020F)
*È« o diaeresis macron (0x022B)
*È o tilde macron (0x022D)
*ȯ o dot (diacritic)|dot above (0x022F... read all