Chinese Grammar & Writing Checkers

★ Uses fixed-rule checks to catch common Mandarin word-order and grammar mistakes while linking learners to explanations. Chinese Sentence Checker by The Pure Language is a free, no-sign-up tool for checking up to 300 characters of Simplified Chinese for common learner errors involving word order, negation, measure words, questions, comparisons, 的/得/地, 把 and 被 sentences, directional complements and more. Detected problems include explanations and links to relevant grammar lessons, and the site says submitted text is not saved. Because the checker uses a limited set of fixed rules rather than AI, it does not evaluate meaning, vocabulary choice, naturalness, tones or every possible grammar error. Note: A result showing no problems only means none of its known error patterns were detected, not that the sentence is necessarily correct.

★ Especially useful for catching Chinese word-choice, punctuation, word-order, and grammar problems while you write. 秘塔写作猫 (MetaSOTA Writing Cat) is a Chinese-language AI writing and proofreading platform where you can start a new document or upload a Word file, then check your writing, review suggested corrections, rewrite and polish passages, generate or continue text, translate, collaborate with others, and use AI-assisted writing tools. Its proofreading system can flag incorrect characters or wording, punctuation problems, awkward word order, and grammar issues, making it particularly useful for learners who want detailed feedback on Chinese writing. The website's interface is in Chinese, but most modern browsers can translate the page. Login is required, with WeChat QR-code login among the available options. A free tier is available with usage limits, while paid plans provide higher limits and additional features. As this is a Chinese site WeChat will likely be required to pay if you decide to do so. WeChat is available in the U.S. app stores for Android and iOS.

★ Checks Chinese grammar and spelling as you type with no signup required. Sapling is a free AI-powered Chinese grammar and spell checker that lets you type or paste Chinese text and see detected errors underlined with suggested corrections. Its browser extension and integrations can also provide writing suggestions on sites such as Gmail, LinkedIn and Google Docs.

★ Checks Mandarin sentences for grammar and naturalness while showing the smallest correction needed. SayMei Chinese Sentence Checker is a free tool for checking a sentence you have written in Chinese characters, pinyin, or even as a short English idea. It gives you a clear verdict, identifies needed corrections, provides a more natural spoken alternative, tone-marked pinyin, an explanation, contrastive examples, and practice drills. Simplified and traditional Chinese are supported, and no account is required.