空 — sky, empty, void

そら空 sky

U+7A7A Unicode hex codepoint — a unique identifier for this character in the Unicode standard. JLPT 4 Japanese-Language Proficiency Test level. N5 is beginner, N1 is the most advanced. This kanji appears at the 4 level. Grade 1 Japanese school grade level in which this kanji is taught. Grade 1 is first year of elementary school. 8 strokes Freq #304 Frequency rank among the ~2,500 most common kanji in Japanese newspapers. Lower number = more common. Heisig #1317 Index in James Heisig's "Remembering the Kanji" — a popular textbook that teaches kanji through mnemonics and stories.

Meanings

sky
empty
void

word

あ a Kun'yomi Kun'yomi (訓読み) — the native Japanese reading of this kanji. Used when the kanji appears alone or with okurigana (trailing hiragana).

空(あ) く aku to become empty

そら sora Kun'yomi Kun'yomi (訓読み) — the native Japanese reading of this kanji. Used when the kanji appears alone or with okurigana (trailing hiragana).

空(そら) sora sky 青(あお) 空(ぞら) aozora blue sky

くう kuu On'yomi On'yomi (音読み) — the Sino-Japanese reading, derived from Chinese pronunciation. Most commonly used in compound words (jukugo).

空(くう) 間(かん) kuukan space 空(くう) 港(こう) kuukou airport 航(こう) 空(くう) koukuu aviation 空(くう) 気(き) kuuki air 航(こう) 空(くう) 機(き) koukuuki aircraft 空(くう) 中(ちゅう) kuuchuu in the air

Stroke order

Stroke data from KanjiVG (CC BY-SA 3.0)