The Japanese Grammar Checker
That Brings Out Your Best.

Real-time suggestions for grammar, keigo, and natural phrasing — so you write with confidence, every time.

Write Japanese with Confidence

From particles and grammar to keigo and kanji — our AI ensures your Japanese is always natural and professional.

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.

SMART CONVERSION

Type naturally.
We handle the Kanji.

Just type in Romaji, and our AI converts it to the correct Japanese Kanji and Kana based on the context.

Natural Input

Type as you speak. We handle the complex script conversion.

Smart Suggestions

We predict the right Kanji for the specific sentence context.

Continuous Learning

The more you write, the better it understands your style.

Pro

会議 始まります。

Grammar

会議 始まります。

GoJapanese

彼は足が早いです。

Spelling

彼は足が 早い 速い です。

GoJapanese
SMART SPELL CHECK

Catch every typo.
Even the tricky ones.

From simple typos to context-dependent Kanji conversion errors, GoJapanese has you covered.

Homophones

Early (Hayai) vs Fast (Hayai) - we detect the correct Kanji based on context.

Okurigana Variations

Consistently handles variations like "okonavu" vs "okonau".

Contextual Fixes

We fix the whole sentence, not just individual words.

STYLE & TONE

Perfect your Tone & Keigo.

Communicate with the right level of politeness. GoJapanese handles everything from business emails to casual chats.

Contextual Keigo

Suggests appropriate honorifics based on relationship and scene.

Business Phrases

Suggests standard cushion words (Kusshon Kotoba) for softer communication.

Fix Double Keigo

Automatically corrects common double honorific mistakes.

もうすぐ社長が参ります

Clarity

もうすぐ社長が参ります いらっしゃいます

GoJapanese
Grammar
Original:
会議始まります。
Suggested:
会議始まります。
Reason:
'Hajimaru' (to begin) is an intransitive verb representing the subject's movement. Use the particle 'ga'.

If you use 'wo', you should use the transitive verb 'Hajimeru' (to start something).
学習 (LEARNING)

Learn the "why" behind the fix.

Every correction comes with a clear explanation in English. Master Japanese grammar naturally as you write.

Clear Explanations

Understand the logic behind the correction.

Advanced Grammar

Learn about verb conjugation, particles, and more.

Skill Up

Write better and better Japanese over time.

AI
美しい日本語を、|kantanni
1簡単に(かんたんに)
2簡単で
3簡単だ
Press Space to select
GoJapanese
スマート入力 (SMART INPUT)

Type in Romaji.
We'll make it Japanese.

You already type konnichiwa. Now, let us handle the rest. GoJapanese intelligently converts your Romaji input into natural Japanese Kanji and Kana, instantly.

Intelligent understanding

Our AI knows you mean こんにちは when you type konnichiwa.

Context-aware conversion

Early (Hayai) vs Fast (Hayai) - we assist with the right choice.

Seamless experience

Type naturally without ever having to switch your keyboard or copy-paste from another app.

Everything you need to know

Common questions about GoJapanese's AI-powered Japanese writing assistant

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Free Japanese Spelling & Grammar Checker for Perfect Writing | GoJapanese