中文拼音、HSK、语法和写作工具

使用 NiuTools 将汉字转为拼音、查询 HSK 2015 与 HSK 3.0 词汇、检查中文语法、改写邮件，并在工作区保存有用结果。

Chinese Tools for Daily Study and Writing

选择专注的中文工具，完成拼音转换、简繁转换、HSK 词汇查询、语法检查、邮件改写和保存复习。

适合日常学习的高效小工具。

中文转拼音将汉字转换成拼音，适用于阅读练习、词汇笔记和更适合学习者的复习流程。你好, 世界 -> ni hao, shi jie免费简繁中文转换在保留原始句子结构的同时，将中文文本在简体和繁体之间进行转换。学习中文 -> 學習中文免费 HSK 词汇查询通过拼音、等级信息和可用学习上下文来搜索 HSK 词汇，便于复习。HSK 4 / context / examples免费

让中文写作更清晰的 AI 工具。

中文语法检查器检查中文学习者写作中的语法问题、语序问题和更自然的表达方式。Correction + natural rewriteAI 次数中文邮件改写器按礼貌、专业、正式或友好的语气，重写中文邮件草稿，让表达更清晰。Polite / Professional / FormalAI 次数

Keep Chinese Study Tasks Organized

从拼音和词汇查询，到语法检查、邮件改写、保存和复习，NiuTools 帮你把零散学习任务放进同一个工作区。

#1Convert

#2Look up

#3Check

#4Rewrite

#5Save

#6Review

Built for Real Chinese Tasks

For Learners

查拼音声调、复习 HSK 词汇、修正常见语法和语序问题，并把有用结果保存下来。

For Teachers

快速准备课堂材料、查询 HSK 例词、解释自然表达，并把学生写作反馈整理得更清楚。

For Global Teams

优化中文邮件、业务表达和正式语气，让跨语言沟通更清晰、更自然。

Choose the Right Chinese Tool for Your Task

Need pronunciation?Use Chinese to Pinyin Converter for tone marks, no-tone pinyin, and learner-friendly output.

Need vocabulary level?Use HSK Vocabulary Lookup for HSK 2015 and HSK 3.0 level, pinyin, meaning, and examples.

Need natural writing?Use Chinese Grammar Checker for grammar, word order, and natural Chinese suggestions.

Need business tone?Use Chinese Email Rewriter for natural, professional, friendly, short, or clear messages.

Chinese Tools FAQ

Are NiuTools Chinese tools free?

Core utilities such as pinyin conversion, Simplified-Traditional conversion, and HSK lookup are designed for free everyday use and do not spend AI uses.

Can I save useful results?

Yes. Use the workspace for history, favorites, and later review. Sign in when you want cloud sync.

Which HSK vocabulary levels are supported?

NiuTools supports HSK 2015 levels 1-6 and HSK 3.0 levels 1-6 plus the official combined 7-9 band.

Can NiuTools help me write more natural Chinese?

Yes. The AI writing tools focus on grammar, word order, natural phrasing, clarity, and Chinese email tone.

Is this only for beginners?

No. NiuTools supports beginners learning pinyin and HSK, plus advanced learners and teams writing more natural Chinese.

Ready to study withfocused Chinese tools?

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