Japanese Grammar Checker
Free AI proofreading for Japanese (日本語): spelling, grammar and punctuation in one click. Paste your text below and correct it right away.
What the Japanese checker fixes
- Japanese spelling: Catches misspelled Japanese words and typing slips, and suggests the correct form.
- Japanese grammar: Finds agreement, tense and word-form errors and shows how to fix each sentence.
- Japanese punctuation: Fixes missing or extra commas, full stops, quotes and brackets.
- Every change explained: Each correction comes with a short reason, so you learn as you write.
How to check Japanese grammar online
- Paste or type your Japanese text in the editor above.
- Click "Check Text". CorrectNow detects the language automatically.
- Review the underlined words and accept the fixes you want, or click "Accept All".
About this Japanese grammar checker
CorrectNow is a free Japanese grammar checker and spell checker for students, office workers, translators and writers. CorrectNow supports Japanese written in Kana and Kanji script, so you can paste text exactly as you wrote it.
It corrects mistakes without rewriting your sentences, so your meaning and voice stay the same. Use it to proofread Japanese essays, emails, documents, social media posts and business writing.
Use it for
- Japanese essays and assignments
- Japanese emails and letters
- Japanese documents and reports
- Japanese articles, blogs and social posts
- Writing Japanese in Gmail and other sites with the CorrectNow Chrome extension
Japanese grammar checker FAQ
Is the Japanese grammar checker free?
Yes. You can check up to 1,000 words of Japanese text a day for free, with no credit card. Pro raises the limit to 5,000 words per check.
Can it check Japanese spelling and punctuation too?
Yes. CorrectNow checks Japanese spelling, grammar and punctuation together and explains every change.
Do I need to choose Japanese before checking?
No. Paste your text and CorrectNow detects Japanese automatically. Mixed-language text is also supported.
Will CorrectNow rewrite my Japanese text?
No. It fixes mistakes only and keeps your words, meaning and tone.
Can I use it on my phone?
Yes. The Japanese checker works in any mobile browser, and CorrectNow also has an Android app and a Chrome extension.
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