Japanese study tools

Use a tool when a calculation or a drill is the decision. The written explanation on each page still works with JavaScript off.

Hiragana and katakana quiz

Drill hiragana and katakana in the browser. No account. Misses stay on this device so you can review the weak rows next.

7 min read

Japanese conjugation drill

Type polite, negative, past, te-form, and later verb voices for a curated in-repo list. Misses show the rule.

8 min read

Japanese Level Self-Check: Beginner Foundations

This short self-check covers kana, vocabulary and grammar. It helps you choose what to practise next; it does not predict a JLPT result or measure your full Japanese level.

4 min read

Japanese study stack builder

Pick the smallest useful Japanese stack from the site's editorial catalog. The written tree still works with JavaScript off.

8 min read

Japanese Textbook Chooser: Tobira or Quartet?

Tobira and Quartet both follow beginner Japanese study. Use your class assignment and preferred lesson format to choose one series, or compare samples before you decide.

3 min read

JLPT Test Length Calculator: N5 to N1

JLPT test sections range from 90 minutes at N5 to 165 minutes at N1. Choose your level and add confirmed breaks; check-in and other venue time are separate.

2 min read

JLPT weekly study planner

Enter a level, weekly hours, and comfort. The page splits time by official section lengths. It does not predict a pass.

8 min read

Romaji to Hiragana and Katakana Converter

Type a Japanese spelling in romaji to see hiragana or katakana, or turn kana into romaji. This tool converts writing, not English words into Japanese.

3 min read

SRS workload simulator

See how new cards turn into later reviews. The projection uses a published interval ladder. It is not Anki, FSRS, or WaniKani.

9 min read