Kanji Database is an online Japanese reference and learning resource designed to help users find, understand, and practise kanji. Its collection includes more than 13,000 characters, with 2,136 commonly used kanji and 863 characters approved for personal names. Users can search by reading, meaning, stroke count, radical, component, school grade, or Kanji Kentei level, and can also draw a character to find visually similar results.

The site supports searches for old and variant forms, sound-reading patterns, difficult words, homophones, antonyms, and characters with similar shapes. Entries include information such as readings, meanings, stroke order animations, and compound words. Additional resources include indexes, four-character idioms, proverbs, name-use readings, and kanji organized by Japanese Language Proficiency Test level.

For practice, visitors can take multiple-choice reading and writing quizzes, answer by handwriting, and create printable grid worksheets. By bringing traditional dictionary lookup methods together with visual search and interactive study tools, Kanji Database serves learners and anyone looking for a convenient way to explore Japanese characters