practice-japanese.com/dictionary/verbs/
Dictionary of 255 Japanese verbs organized by JLPT level from N5 to N3, with conjugation tables showing te-form, potential, passive, and causative forms for each verb.
Dictionaries and lookupVocabularyJLPT N5JLPT N4JLPT N3Verb conjugationJLPTDictionariesPassive and causativeTe-formConditionalsTravel in Japan