Kanji are meaning-based characters
Unlike hiragana and katakana — which represent sounds — kanji are logographic: each character carries meaning, not just sound. The character 山 means "mountain." 水 means "water." 愛 means "love." You can often understand the general meaning of a word from its kanji even before you know the exact pronunciation.
Japanese uses around 2,136 kanji in everyday life (the official jōyō kanji list). A university-educated Japanese person knows around 3,000. Newspapers, novels, and official documents use kanji throughout. Without them, reading Japanese becomes extremely difficult.
Where kanji come from
Kanji were imported from China over many centuries, primarily between the 4th and 9th centuries CE. The Japanese already had a spoken language but no writing system — they adopted Chinese characters and adapted them to write Japanese. Over time, Japan also created its own characters (called kokuji — national characters) for concepts that had no Chinese equivalent, like 峠 (mountain pass) and 畑 (dry field).
This history explains why kanji have two types of readings: on'yomi (the Chinese-derived reading) and kun'yomi (the native Japanese reading). Most kanji have at least one of each, and many have several.
You do not need to learn all 2,136 jōyō kanji before you can read Japanese. The most frequent 500 kanji cover around 80% of characters used in newspaper text. Start with the most common and build from there.
How kanji combine to form words
Many Japanese words are formed by combining two or more kanji. 電話 (denwa — telephone) combines 電 (electricity) and 話 (speech/talk). 新聞 (shinbun — newspaper) combines 新 (new) and 聞 (hear). Understanding individual kanji meanings gives you powerful clues for decoding unfamiliar compound words.
How kanji fit into the Japanese writing system
Japanese uses three scripts simultaneously. Kanji carry the core meaning of words. Hiragana handles grammar — verb endings, particles, and words without kanji. Katakana writes foreign loanwords and scientific terms. A typical Japanese sentence uses all three, often in the same phrase: 私はコーヒーが好きです (I like coffee) contains kanji, katakana, and hiragana together.
Explore Japanese kanji
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