Japanese Text Checker
Check Japanese character counts, full/half-width mixing, long sentences and reading time, then normalize in one click.
186
Characters
184
No line breaks
184
No spaces/breaks
3
Sentences
1
Over 80 chars
<1 min
Reading time
Full-width / half-width mix
- Full-width letters & digits3 chars
ＣＭＳ
Web articles usually use half-width.
- Half-width katakana6 chars
ｶﾃｺﾞﾘｰ
Can render poorly; full-width katakana is safer.
- Mixed 。 and . periodsJA 1 / western 1
Pick one style.
- Mixed ！ and !JA 1 / western 1
Use one width consistently.
Sentences over 80 characters
Line 2 · 98 chars
ただし、導入前にｶﾃｺﾞﾘｰの設計や公開ルールを決めておかないと、記事が増えるにつれて整理が難しくなり、結果として読者が目的の情報にたどり着けないサイトになってしまうこともあるので注意が必要です。
Runs entirely in your browser. Nothing you enter is uploaded.
How to use
- 1Paste the Japanese text you want to check (a sample is filled in to start).
- 2Review the character counts, full/half-width mixing, sentences over the limit and reading time. You can change the limit.
- 3Press "Normalize" to fix full-width letters, half-width katakana and mixed punctuation in one go. Use "Undo" if you prefer the original.
When it helps
- Evening out variations like "ＣＭＳ" vs "CMS" in articles written by several people.
- Finding hard-to-read long sentences that could be split.
- Giving a freelancer's draft a quick check before it goes into the CMS.
FAQ
What does "Normalize" change?
Full-width letters and digits become half-width, and half-width katakana becomes full-width. Where 。 and ., ！ and !, or （） and () are mixed, it switches to whichever form the text uses more. Full-width kana, kanji and full-width spaces are left as they are.
Will it alter English phrases or URLs?
Punctuation and ! / ? are only counted right after Japanese characters, so URLs and English phrases stay as they are.
How is reading time calculated?
It is an estimate based on about 500 characters per minute, excluding spaces and line breaks.
Related tools
Automate this inside your content workflow.
tixigen manages SEO, metadata and multilingual publishing in one flow.