読む・語彙・書くための中国語学習ツール。

Convert Chinese characters to pinyin, look up HSK 2015 and HSK 3.0 vocabulary, check Chinese grammar, rewrite emails, and save useful study results in one focused workspace.

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Chinese Tools for Daily Study and Writing

中国語からピンインへの変換、簡体字・繁体字変換、HSK語彙検索、文法チェック、中国語メールの書き換えのための専用ツールを使えます。

日常学習のための高速ユーティリティ。

中国語ピンイン変換中国語の文字をピンインに変換し、読解練習、語彙ノート、学習者向けの学習ワークフローに役立てます。你好, 世界 -> ni hao, shi jie無料簡体字・繁体字中国語変換元の文構造を保ったまま、中国語テキストを簡体字と繁体字の間で変換します。学习中文 -> 學習中文無料 HSK 語彙検索ピンイン、級情報、利用可能な学習文脈とともに HSK 語彙を検索して復習できます。HSK 4 / context / examples無料

より自然な中国語を書くための AI ツール。

中国語文法チェッカー中国語学習者の文章にある文法の問題、語順の問題、より自然な言い回しをチェックします。Correction + natural rewriteAI使用中国語メール書き換え礼儀正しい、プロフェッショナル、フォーマル、または親しみやすいトーンで中国語メールの下書きを書き換えます。Polite / Professional / FormalAI使用

Keep Chinese Study Tasks Organized

Move from pinyin and vocabulary lookup to grammar review, rewriting, saving, and follow-up practice without scattering results across separate tabs.

#1Convert

#2Look up

#3Check

#4Rewrite

#5Save

#6Review

Built for Real Chinese Tasks

For Learners

Convert characters to pinyin, review HSK words, fix grammar and word order issues, and keep useful results for later practice.

For Teachers

Prepare lesson material, check HSK examples, explain natural wording, and turn learner mistakes into reusable feedback.

For Global Teams

Improve Chinese emails, business phrasing, and professional tone for real communication.

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 use the pinyin converter without signing in?

Yes. Quick utilities and the workspace can be explored directly. Sign in when you want cloud sync.

What is the difference between grammar checking and rewriting?

Grammar checking focuses on correctness and naturalness. Rewriting helps adjust tone, clarity, and format for a specific use case.

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.

Can I save results in a workspace?

Yes. The workspace keeps history and favorites so useful corrections and lookups are easy to review. Sign in when you want cloud sync.

Ready to study withfocused Chinese tools?

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