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Kai 海 – Japanese surname

Kai (海) is read かい and has 2 syllables. It is a family name. Written as 海, the characters mean: sea. This reading can be written with at least 20 different kanji combinations (the 6 most common are shown below), with 9 to 15 strokes in total.

About the name Kai

Kai (甲斐) is an old province, now Yamanashi, ruled by the Takeda clan. It is also a short given name.

How to write Kai in Japanese

KanjiReadingLiteral meaningStrokes
海かいsea9
開かいopen12
加井かいadd + well9
改井かいreformation + well11
鹿井かいdeer + well15
加衣かいadd + garment11

Meanings are literal translations of each kanji. Names are often chosen for sound, so the intended meaning can differ.

The kanji in Kai

海
sea, ocean
9 strokes, taught in elementary school, grade 2
On: カイ Kun: うみ
開
open, unfold, unseal
12 strokes, taught in elementary school, grade 3
On: カイ Kun: ひら、びら、あ
加
add, addition, increase, join
5 strokes, taught in elementary school, grade 4
On: カ Kun: くわ
井
well, well crib, town, community
4 strokes, taught in elementary school, grade 4
On: セイ、ショウ Kun: い

Kai in different scripts

RomajiKai
Hiraganaかい
Katakanaカイ
Kanji (most common)海

Full name examples

How to pronounce Kai

Break it into 1 parts: kai. Japanese has no stressed syllables like English, so say each part with the same length and the same weight. The 2 sound units are written かい.

Questions about Kai

What does Kai mean in Japanese?

Kai has no single fixed meaning: it depends on the kanji. The most common spelling, 海, combines these meanings: sea. Other spellings include 開 (open), 加井 (add + well), 改井 (reformation + well).

How do you write Kai in kanji?

The most common way is 海 (かい). It can also be written 開, 加井, 改井, 鹿井, 加衣.

How do you write Kai in katakana?

Kai is カイ in katakana and かい in hiragana.

How do you pronounce Kai?

Kai is read かい and has 2 syllables (morae).

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Themes: Nature

Other surnames that use 海

海: sea, ocean

Names with a similar sound

Similar last names by meaning

Name data: JMnedict and KANJIDIC2, © EDRDG, licensed CC BY-SA 4.0. Filtered, regrouped and annotated by NihonNames.