5 Best Chinese Grammar Checkers in 2026

Why Chinese Grammar Checking Is Different

English grammar checkers rely on rules like subject-verb agreement, tense conjugation, and article usage. None of those exist in Chinese. Instead, Chinese has its own set of challenges that most tools weren't designed for:

• No spaces between words — the checker must first segment a sentence into words before it can analyze grammar. Getting word boundaries wrong breaks everything downstream.
• Measure words (量词) — Chinese requires specific classifiers between numbers and nouns. "三本书" is correct, "三个书" is wrong. There are hundreds of these pairings.
• Topic-comment structure — Chinese often puts the topic first ("这件事我不知道"), which looks like a fragment to English-trained tools but is perfectly natural Chinese.
• Particles (了/的/地/得) — these small characters change meaning dramatically. Confusing 的, 地, and 得 is one of the most common mistakes, even for native speakers.
• No conjugation — verbs don't change form, so the checker can't rely on morphological patterns to detect errors.
• Character-level ambiguity — tones don't affect written grammar, but choosing the wrong homophone character (e.g., 在 vs 再) is a frequent mistake that spell checkers must catch in context.

Rule-based grammar checkers struggle with all of this. AI-powered tools that understand context and semantics do significantly better.

Best Chinese Grammar Checkers

1. FlowWrite — Best for Mac Users Who Write in Chinese

FlowWrite uses large language models to correct Chinese grammar in any Mac application. Select text, press Tab, and it fixes errors in place — including 的/地/得 confusion, measure word mistakes, and awkward phrasing.

• AI-powered — understands Chinese context and semantics
• Works system-wide on Mac (WeChat, Mail, Notes, Chrome, any app)
• Handles Simplified and Traditional Chinese
• Also translates between Chinese and English
• Free (20/day) or $2.99/month

Limitation: macOS only. Requires internet connection.

2. ChatGPT / Claude — Best for Detailed Explanations

Pasting Chinese text into ChatGPT or Claude and asking for a grammar review works surprisingly well. Both models understand Chinese grammar deeply and can explain why something is wrong — useful for learners.

• Excellent Chinese grammar understanding
• Can explain rules and suggest alternatives
• Free tiers available

Limitation: Copy-paste workflow. No integration with your writing apps. Slow for quick corrections.

3. LanguageTool — Limited Chinese Support

LanguageTool lists Chinese as a supported language, but in practice its Chinese checking is basic. It catches some spelling errors and simple punctuation issues, but misses most grammar mistakes. The rule-based engine wasn't built for Chinese sentence structure.

• Free tier available
• Browser extension and desktop app
• Open source core

Limitation: Chinese support is shallow. Don't expect it to catch 的/地/得 errors or measure word issues.

4. Microsoft Editor — Basic Chinese in Word/Edge

Microsoft Editor offers basic Chinese proofing in Word and Edge. It catches typos and some punctuation errors, but grammar checking is minimal. It's better than nothing if you're already in the Microsoft ecosystem.

• Built into Word and Edge for free
• Catches basic typos and punctuation

Limitation: Grammar checking is surface-level. Only works in Microsoft apps.

5. Grammarly — No Chinese Support

Grammarly does not support Chinese. At all. If you type Chinese into Grammarly, it either ignores it or flags everything as an error. This is worth noting because many people search for "Chinese grammar checker" expecting Grammarly to handle it. It doesn't, and there are no announced plans to add Chinese.

Comparison

For Chinese-English Bilingual Writers

If you write in both Chinese and English — emails to international colleagues, bilingual documents, or just switching between languages throughout the day — most grammar checkers force you to pick one language at a time.

FlowWrite handles this natively. It detects the language of your selected text automatically and corrects accordingly. More usefully, it can translate between Chinese and English in the same workflow: select Chinese text, press Tab, and get a corrected English translation (or vice versa). No app switching, no copy-pasting into a translator.

This makes it particularly useful for bilingual professionals — you can draft in Chinese, translate to English, and polish the English text, all without leaving your current app.