jlptlord.com/resources/study-calculator
Calculator that estimates study hours needed to reach each JLPT level based on current proficiency and daily study time, with research-backed hour requirements and study tips.
Apps and toolsJLPT and other testsJLPTAppsBlogStudy methodsJLPT N5JLPT N1Spaced repetitionJLPT N4JLPT N3JLPT N2