Labs: Interactive Japanese Learning Tools
Choose a tool for kana practice, handwriting recognition, sentence analysis, Katakana name suggestions, or Japanese counters.
Some tools are still in development. Features and layout may change over time.
Practice Modules
Tegaki Recognizer
Draw one kanji, hiragana, or katakana character. The tool shows several candidates you can copy.
Hiragana Practice
Practice basic Hiragana recognition with question cards and immediate feedback.
Katakana Practice
Practice Katakana recognition with a multiple-choice quiz and mastery notes stored on your device.
Advanced Practice
Generators and Utilities
Bunpou Lens
MorphologyEnter a Japanese sentence to inspect word segmentation, readings, base forms, parts of speech, and conjugation data.
Katakana Names
Enter a name in Latin letters to get a suggested Katakana spelling and reading guide.
Counter Calculator
Enter a number up to 16 digits and choose a counter type to see the kanji, hiragana, and romaji forms.
Why Labs Exists
Jepang.org Labs is our interactive research and development space for trying Japanese learning ideas that stay ambitious and still practical.
We publish small apps with a very specific job. Bunpou Lens breaks a sentence into clear parts; the counter calculator follows Japanese pronunciation rules for counting things. Each experiment uses open-source materials and is built so others can inspect it and improve it together.
Open Source and Datasets
Some of the libraries and datasets behind these tools are public on GitHub and NPM.
Frequently Asked Questions
What is Jepang.org Labs?
Jepang.org Labs is a set of interactive tools that help you practice Japanese, including Bunpou Lens, the counter calculator, and the Katakana name converter.
Are Labs tools free?
Yes. Every Labs tool is free to use in the browser with no download or account required.
Which tools are available now?
Current tools include Tegaki Recognizer, Hiragana Practice, Katakana Practice, Bunpou Lens, Katakana Names, the Counter Calculator, and JLPT kanji practice links on Kanji.Jepang.org.
Can I use Labs on a phone?
Yes. The Labs hub and tools are designed for both mobile and desktop browsers.
Does Labs include open-source work?
Yes. Some of the libraries and datasets we use are public on GitHub and NPM. You can find the links in the Open Source and Datasets section.