I am trying to separate English and Japanese characters. I need to find Unicode range of all Japanese characters. What is Unicode range of all Japanese characters ?
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3Why don't you [look it up on the official Unicode site?](http://www.unicode.org/charts/) - that would be your best reference ... – marc_s Nov 11 '13 at 05:39
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3Japanese seems to have multiple scripts, so I was not sure to about all scripts Japanese have. Can you tell me something about it. – Neeraj Kumar Nov 11 '13 at 05:41
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What do you intend to do with fullwidth alphabetic? They are both English and Japanese. – Raymond Chen Nov 11 '13 at 06:18
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1For a starter, define “English characters” and “Japanese characters”. Is “1” English, Japanese, both, or neither? What about “é”? You should decide what you really want to do, and this requires understanding your goal, the application contexts, etc. – things that are outside the scope of SO. – Jukka K. Korpela Nov 11 '13 at 07:01
5 Answers
As zawhtut mentioned, this page has a reference for several unicode ranges. To summarize the ranges:
- Japanese-style punctuation ( 3000 - 303f)
- Hiragana ( 3040 - 309f)
- Katakana ( 30a0 - 30ff)
- Full-width roman characters and half-width katakana ( ff00 - ffef)
- CJK unifed ideographs - Common and uncommon kanji ( 4e00 - 9faf)

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3That is a nice overview but one has to be careful with the Hiragana range. U+3040, U+3097 and U+3098 are not actually Hiragana characters. – nhkode Mar 24 '19 at 16:56
Although this question already has an answer, this blog post is probably more complete.
Please visit the site and get their metrics up, but for posterity here's a copy-paste.
Hiragana
Unicode code points regex:
[\x3041-\x3096]
Unicode block property regex:
\p{Hiragana}
ぁ あ ぃ い ぅ う ぇ え ぉ お か が き ぎ く ぐ け げ こ ご さ ざ し じ す ず せ ぜ そ ぞ た だ ち ぢ っ つ づ て で と ど な に ぬ ね の は ば ぱ ひ び ぴ ふ ぶ ぷ へ べ ぺ ほ ぼ ぽ ま み む め も ゃ や ゅ ゆ ょ よ ら り る れ ろ ゎ わ ゐ ゑ を ん ゔ ゕ ゖ ゙ ゚ ゛ ゜ ゝ ゞ ゟ
Katakana (Full Width)
Unicode code points regex:
[\x30A0-\x30FF]
Unicode block property regex:
\p{Katakana}
゠ ァ ア ィ イ ゥ ウ ェ エ ォ オ カ ガ キ ギ ク グ ケ ゲ コ ゴ サ ザ シ ジ ス ズ セ ゼ ソ ゾ タ ダ チ ヂ ッ ツ ヅ テ デ ト ド ナ ニ ヌ ネ ノ ハ バ パ ヒ ビ ピ フ ブ プ ヘ ベ ペ ホ ボ ポ マ ミ ム メ モ ャ ヤ ュ ユ ョ ヨ ラ リ ル レ ロ ヮ ワ ヰ ヱ ヲ ン ヴ ヵ ヶ ヷ ヸ ヹ ヺ ・ ー ヽ ヾ ヿ
Kanji
Unicode code points regex:
[\x3400-\x4DB5\x4E00-\x9FCB\xF900-\xFA6A]
Unicode block property regex:
\p{Han}
漢字 日本語 文字 言語 言葉 etc. Too many characters to list.
This regular expression will match all the kanji, including those used in Chinese.
Kanji Radicals
Unicode code points regex:
[\x2E80-\x2FD5]
⺀ ⺁ ⺂ ⺃ ⺄ ⺅ ⺆ ⺇ ⺈ ⺉ ⺊ ⺋ ⺌ ⺍ ⺎ ⺏ ⺐ ⺑ ⺒ ⺓ ⺔ ⺕ ⺖ ⺗ ⺘ ⺙ ⺛ ⺜ ⺝ ⺞ ⺟ ⺠ ⺡ ⺢ ⺣ ⺤ ⺥ ⺦ ⺧ ⺨ ⺩ ⺪ ⺫ ⺬ ⺭ ⺮ ⺯ ⺰ ⺱ ⺲ ⺳ ⺴ ⺵ ⺶ ⺷ ⺸ ⺹ ⺺ ⺻ ⺼ ⺽ ⺾ ⺿ ⻀ ⻁ ⻂ ⻃ ⻄ ⻅ ⻆ ⻇ ⻈ ⻉ ⻊ ⻋ ⻌ ⻍ ⻎ ⻏ ⻐ ⻑ ⻒ ⻓ ⻔ ⻕ ⻖ ⻗ ⻘ ⻙ ⻚ ⻛ ⻜ ⻝ ⻞ ⻟ ⻠ ⻡ ⻢ ⻣ ⻤ ⻥ ⻦ ⻧ ⻨ ⻩ ⻪ ⻫ ⻬ ⻭ ⻮ ⻯ ⻰ ⻱ ⻲ ⻳ ⼀ ⼁ ⼂ ⼃ ⼄ ⼅ ⼆ ⼇ ⼈ ⼉ ⼊ ⼋ ⼌ ⼍ ⼎ ⼏ ⼐ ⼑ ⼒ ⼓ ⼔ ⼕ ⼖ ⼗ ⼘ ⼙ ⼚ ⼛ ⼜ ⼝ ⼞ ⼟ ⼠ ⼡ ⼢ ⼣ ⼤ ⼥ ⼦ ⼧ ⼨ ⼩ ⼪ ⼫ ⼬ ⼭ ⼮ ⼯ ⼰ ⼱ ⼲ ⼳ ⼴ ⼵ ⼶ ⼷ ⼸ ⼹ ⼺ ⼻ ⼼ ⼽ ⼾ ⼿ ⽀ ⽁ ⽂ ⽃ ⽄ ⽅ ⽆ ⽇ ⽈ ⽉ ⽊ ⽋ ⽌ ⽍ ⽎ ⽏ ⽐ ⽑ ⽒ ⽓ ⽔ ⽕ ⽖ ⽗ ⽘ ⽙ ⽚ ⽛ ⽜ ⽝ ⽞ ⽟ ⽠ ⽡ ⽢ ⽣ ⽤ ⽥ ⽦ ⽧ ⽨ ⽩ ⽪ ⽫ ⽬ ⽭ ⽮ ⽯ ⽰ ⽱ ⽲ ⽳ ⽴ ⽵ ⽶ ⽷ ⽸ ⽹ ⽺ ⽻ ⽼ ⽽ ⽾ ⽿ ⾀ ⾁ ⾂ ⾃ ⾄ ⾅ ⾆ ⾇ ⾈ ⾉ ⾊ ⾋ ⾌ ⾍ ⾎ ⾏ ⾐ ⾑ ⾒ ⾓ ⾔ ⾕ ⾖ ⾗ ⾘ ⾙ ⾚ ⾛ ⾜ ⾝ ⾞ ⾟ ⾠ ⾡ ⾢ ⾣ ⾤ ⾥ ⾦ ⾧ ⾨ ⾩ ⾪ ⾫ ⾬ ⾭ ⾮ ⾯ ⾰ ⾱ ⾲ ⾳ ⾴ ⾵ ⾶ ⾷ ⾸ ⾹ ⾺ ⾻ ⾼ ⾽ ⾾ ⾿ ⿀ ⿁ ⿂ ⿃ ⿄ ⿅ ⿆ ⿇ ⿈ ⿉ ⿊ ⿋ ⿌ ⿍ ⿎ ⿏ ⿐ ⿑ ⿒ ⿓ ⿔ ⿕
Katakana and Punctuation (Half Width)
Unicode code points regex:
[\xFF5F-\xFF9F]
⦅ ⦆ 。 「 」 、 ・ ヲ ァ ィ ゥ ェ ォ ャ ュ ョ ッ ー ア イ ウ エ オ カ キ ク ケ コ サ シ ス セ ソ タ チ ツ テ ト ナ ニ ヌ ネ ノ ハ ヒ フ ヘ ホ マ ミ ム メ モ ヤ ユ ヨ ラ リ ル レ ロ ワ ン ゙
Japanese Symbols and Punctuation
Unicode code points regex:
[\x3000-\x303F]
、 。 〃 〄 々 〆 〇 〈 〉 《 》 「 」 『 』 【 】 〒 〓 〔 〕 〖 〗 〘 〙 〚 〛 〜 〝 〞 〟 〠 〡 〢 〣 〤 〥 〦 〧 〨 〩 〪 〫 〬 〭 〮 〯 〰 〱 〲 〳 〴 〵 〶 〷 〸 〹 〺 〻 〼 〽 〾 〿
Miscellaneous Japanese Symbols and Characters
Unicode code points regex:
[\x31F0-\x31FF\x3220-\x3243\x3280-\x337F]
ㇰ ㇱ ㇲ ㇳ ㇴ ㇵ ㇶ ㇷ ㇸ ㇹ ㇺ ㇻ ㇼ ㇽ ㇾ ㇿ ㈠ ㈡ ㈢ ㈣ ㈤ ㈥ ㈦ ㈧ ㈨ ㈩ ㈪ ㈫ ㈬ ㈭ ㈮ ㈯ ㈰ ㈱ ㈲ ㈳ ㈴ ㈵ ㈶ ㈷ ㈸ ㈹ ㈺ ㈻ ㈼ ㈽ ㈾ ㈿ ㉀ ㉁ ㉂ ㉃ ㊀ ㊁ ㊂ ㊃ ㊄ ㊅ ㊆ ㊇ ㊈ ㊉ ㊊ ㊋ ㊌ ㊍ ㊎ ㊏ ㊐ ㊑ ㊒ ㊓ ㊔ ㊕ ㊖ ㊗ ㊘ ㊙ ㊚ ㊛ ㊜ ㊝ ㊞ ㊟ ㊠ ㊡ ㊢ ㊣ ㊤ ㊥ ㊦ ㊧ ㊨ ㊩ ㊪ ㊫ ㊬ ㊭ ㊮ ㊯ ㊰ ㊱ ㊲ ㊳ ㊴ ㊵ ㊶ ㊷ ㊸ ㊹ ㊺ ㊻ ㊼ ㊽ ㊾ ㊿ ㋀ ㋁ ㋂ ㋃ ㋄ ㋅ ㋆ ㋇ ㋈ ㋉ ㋊ ㋋ ㋐ ㋑ ㋒ ㋓ ㋔ ㋕ ㋖ ㋗ ㋘ ㋙ ㋚ ㋛ ㋜ ㋝ ㋞ ㋟ ㋠ ㋡ ㋢ ㋣ ㋤ ㋥ ㋦ ㋧ ㋨ ㋩ ㋪ ㋫ ㋬ ㋭ ㋮ ㋯ ㋰ ㋱ ㋲ ㋳ ㋴ ㋵ ㋶ ㋷ ㋸ ㋹ ㋺ ㋻ ㋼ ㋽ ㋾ ㌀ ㌁ ㌂ ㌃ ㌄ ㌅ ㌆ ㌇ ㌈ ㌉ ㌊ ㌋ ㌌ ㌍ ㌎ ㌏ ㌐ ㌑ ㌒ ㌓ ㌔ ㌕ ㌖ ㌗ ㌘ ㌙ ㌚ ㌛ ㌜ ㌝ ㌞ ㌟ ㌠ ㌡ ㌢ ㌣ ㌤ ㌥ ㌦ ㌧ ㌨ ㌩ ㌪ ㌫ ㌬ ㌭ ㌮ ㌯ ㌰ ㌱ ㌲ ㌳ ㌴ ㌵ ㌶ ㌷ ㌸ ㌹ ㌺ ㌻ ㌼ ㌽ ㌾ ㌿ ㍀ ㍁ ㍂ ㍃ ㍄ ㍅ ㍆ ㍇ ㍈ ㍉ ㍊ ㍋ ㍌ ㍍ ㍎ ㍏ ㍐ ㍑ ㍒ ㍓ ㍔ ㍕ ㍖ ㍗ ㍘ ㍙ ㍚ ㍛ ㍜ ㍝ ㍞ ㍟ ㍠ ㍡ ㍢ ㍣ ㍤ ㍥ ㍦ ㍧ ㍨ ㍩ ㍪ ㍫ ㍬ ㍭ ㍮ ㍯ ㍰ ㍱ ㍲ ㍳ ㍴ ㍵ ㍶ ㍻ ㍼ ㍽ ㍾ ㍿
Alphanumeric and Punctuation (Full Width)
Unicode code points regex:
[\xFF01-\xFF5E]
! " # $ % & ' ( ) * + , - . / 0 1 2 3 4 5 6 7 8 9 : ; < = > ? @ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z [ \ ] ^ _ ` a b c d e f g h i j k l m n o p q r s t u v w x y z { | } ~

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Please see this page for a reference. It contains Katakana, Hiragana and Kanji unicode ranges.

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7Answers should be self contained. Links should be for context, background material and sources. See [here](https://stackoverflow.com/help/how-to-answer): "Always quote the most relevant part of an important link, in case the target site is unreachable or goes permanently offline." – AnnanFay Mar 03 '18 at 04:42
CJK(Chinese Japanese and Korean), Hiragana and Katakana(include Halfwidth Katakana)

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11Answers should be self contained. Links should be for context, background material and sources. See [here](https://stackoverflow.com/help/how-to-answer): "Always quote the most relevant part of an important link, in case the target site is unreachable or goes permanently offline." – AnnanFay Mar 03 '18 at 04:41
What is Unicode range of all Japanese characters?
Have a look at page of The WiLI benchmark dataset for written language identification, especially table II. The number in bracket is the part of the language you capture with the Unicode code range (in decimal).
- 12352 - 12543: Japanese (48.73%), English (0.00%)
- 19000 - 44000: Japanese (32.78%), English (0.00%)
- 20 - 128: English (99.74%), Japanese (11.58%)
You can see that 20 - 128 captures English really well and that all 3 blocks are important for Japanese, but still big parts are missing.

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It's surprising that 20-128 is so big. I assume most of this is using Arabic numerals and punctuation. Maybe A-Za-z when emphasising foreign words or brands. – AnnanFay Mar 03 '18 at 04:50
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I guess most is space, punctuation and numerals. I can check when I'm at home :-) – Martin Thoma Mar 03 '18 at 08:49