ASCII Character UUppercase U
U or u, is the twenty-first and sixth-to-last letter of the ISO basic Latin alphabet and usually considered the fifth vowel letter of the modern English alphabet. Its name in English is u (pronounced /ˈjuː/), plural ues. Additionally, the letter 'u' is used in text messaging, Internet and other written slang to denote 'you', by virtue of both being pronounced /juː/. It is the thirteenth most frequently used letter in the English language, with a frequency of about 2.8% in words.