Grammar and style suggestions will show up here as you write.
Write Japanese with Confidence
Check particles, grammar, kanji mix-ups, and honorific language in one place while you write.
Context-Aware
AI
Our AI understands the nuances of Japanese context to provide the best suggestions.
Grammar
& Keigo
Fix complex particles and honorifics with precision.
Smart
Conversion
Convert Romaji to the correct Kanji based on context.
Available
Everywhere
Start on mobile, finish on desktop. Your data is always synced.
Fix Japanese particles and
grammar instantly.
Catch incorrect particles, conjugation mistakes, and unnatural sentence patterns that basic spell checkers miss.
Particle Correction
Accurate "Teniwoha" checks for wa, ga, ni, wo, and more.
Conjugation Checks
Fix verb and adjective forms giving you trouble.
Natural Phrasing
Write like a native speaker with natural expression suggestions.
会議 を始まります。
会議をが始まります。
彼は足が早いです。
彼は足が早い速いです。
Catch Japanese typos that
change your meaning.
Detect kanji mix-ups, homophone errors, and spelling issues in context, not just word by word.
Context, not just Spelling
Hayai (Fast) or Hayai (Early)? We pick the right one automatically.
Okurigana Consistency
Never worry about verb ending variations again.
Whole-Sentence Logic
We analyze the full thought, not just individual words, to ensure logical flow.
Fix keigo and choose the right tone.
Improve business Japanese, polite requests, and honorific expressions so your writing matches the situation.
Keigo Guardrails
Instantly spot and fix rude phrasing or double-honorific mistakes.
The "Cushion" Effect
We suggest standard Kusshon Kotoba (cushion words) to soften requests and sound more native.
Context Matching
The AI knows who you are talking to and suggests the appropriate level of respect.
資料を確認してください。
資料を確認してください。 お手数ですが、ご確認いただけますでしょうか。
Understand why each Japanese correction is made.
Every suggestion includes a clear explanation, so you improve your Japanese while you write.
Logic, Explained
We don't just swap the word; we tell you the grammatical rule behind it.
Grammar Deep Dives
Understand the nuance of particles, transitive verbs, and conjugations in real-time.
Active Learning
Improve your actual Japanese proficiency with every sentence you type.
Convert romaji to kanji
without breaking your flow.
Type in romaji and choose the right Japanese script in context without switching tools.
Zero Friction
Forget copy-pasting from translation apps. Write directly in your natural flow.
Intelligent Intent
We know hashi means "chopsticks" at dinner and "bridge" on a map.
Stay in the Zone
A writing experience so smooth you'll forget you're using a tool.
Japanese Grammar Checker FAQ
Common questions about grammar checks, keigo corrections, and writing assistance in GoJapanese
Ready to write more natural Japanese?
Start with the free version and check grammar, keigo, and tone in one place.
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