I (kana)

Like other vowels, scaled-down versions of the kana (ぃ, ィ) are used to express sounds foreign to the Japanese language, such as フィ (fi). In some Okinawan writing systems, a small ぃ is also combined with the kana く (ku) and ふ to form the digraphs くぃ kwi and ふぃ hwi respectively, although the Ryukyu University system uses the kana ゐ/ヰ instead.

い comes from the left part of the Kanji 以, while イ originates from the left part of the Kanji 伊.[1] An alternate form - 𛀆, based on the full cursive form of 以 is one of the most common hentaigana, as it merged with い late in the development of modern Japanese writing.

Stroke order in writing い

Stroke order in writing イ

Stroke order in writing い

The Hiragana い is made in two strokes:

1. At the top left, a curved vertical stroke, ending with a hook at the bottom.
2. At the top right, a shorter stroke, slightly curving in the opposite direction.

Stroke order in writing イ

The Katakana イ is made in two strokes:

1. At the top, a curved diagonal line going from right to left.
2. In the center of the last stroke, a vertical line going down.

Japanese radiotelephony alphabet	Wabun code
いろはのイ Iroha no "I"	▄ ▄▄▄ ⓘ

Japanese Navy Signal Flag	Japanese semaphore	Japanese manual syllabary (fingerspelling)	Braille dots-12 Japanese Braille

• Full Braille representation

い / イ in Japanese Braille
い / イ i	いい / イー ī	+い / +ー chōon*

* When lengthening "-i" or "-e" syllables in Japanese braille, a chōon is always used, as is standard in katakana orthography, instead of adding the い / イ kana.

• Computer encodings