For English-speaking learners
Use the Pinyin Converter, Character Decomposer, Grammar Checker and HSK Level Test for free — no signup. Each tool targets a single failure mode so you can pick the one you need right now.
Chinese language intelligence · since 2024
学中文，smarter.
Twelve free tools built on a structured Chinese Language Knowledge Base — characters, pinyin, grammar, HSK, pronunciation. Diagnose what you actually struggle with and practise the gaps.
- Tools
- 12
- HSK coverage
- 1 → 6
- Characters seeded
- 214
- Pricing
- Free
§ 01 — Twelve free tools
One knowledge base, twelve doors into Chinese.
Each tool reads from the same structured dataset — so the character you look up here is the same character analysed there.
Character Lookup
Meaning · pinyin · stroke · components
Pinyin Converter
Tone marks or numeric tones
Character Decomposer
Semantic + phonetic components
Sentence Analyzer
Tokens · grammar · HSK · difficulty
Grammar Checker
Mistakes with clear explanations
Reading Level
HSK estimate + rewrite to level
HSK Level Test
Multi-dimensional assessment
Measure Words
Correct classifier, with examples
Sentence Generator
Examples at any HSK level
Text Simplifier
Rewrite to HSK 2 / 3 / 4 / 5
Slang Explorer
Internet slang, meaning, origin
Try: 学 (xué)
A live character page
§ 02 — The knowledge base
Chinese is a structured language. We treat it that way.
The Chinese Language Knowledge Base is a structured dataset of characters, words, grammar points, HSK vocabulary, pinyin, stroke order and usage examples. Tools read from the same source — so the output of one is never out of step with another.
Instead of feeding you lessons, Chinese365 diagnoses what you actually struggle with — tones, measure words, 了 vs 的, word order — and generates practice targeted at the gap.
Characters
214
HSK 1 (151) · HSK 2 (64)
HSK words
35
35 in HSK 1–2 only
Grammar points
3
e.g. de-possessive
Slang / measure
25
e.g. he-he-he · e.g. 个
§ 03 — Live page · sample
学 · xuéHSK 1 · 2 · HSK 1Open full page →学 xué
to learn · to study- Pinyin
- xué — 2nd tone
- Meaning
- to learn · to study
- Radical
- 子 · 8 strokes
- Frequency
- 95.0% · rank HSK 1 in HSK 1
- Compounds
- 学习xuéxí学生xuéshēng学校xuéxiào
- Example
- 我学习中文。I study Chinese.
§ 04 — Built for two kinds of people
Learners. And the people who build for them.
For developers & apps
The same Chinese-language intelligence — pinyin, decomposition, grammar checks, HSK scoring, simplifiers — is available over HTTP. One API replaces a dozen NLP glue scripts.
GET https://chinese365.org/api/v1/hsk?text=我喜欢学中文 → { "level": 3, "tokens": [...], "grammar": [...] }
Unlike other apps that just feed lessons, Chinese365 figures out what you're actually stuck on and makes you practise that.