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Welcome to

"Japanese Verb Conjugation 101"

This website provides the verb conjugation practice for Japanese language learners.

Why are the Japanese verb conjugations so important?

Different verb conjugation forms convey different meaning.

Japanese relies on 13 verb conjugation forms for most purposes.

Depending on the meaning the speaker wishes to convey, students of Japanese need to choose and utilize the appropriate verb conjugation form. Furthermore, the conjugation rules are not simple.

First of all, Japanese verbs occur in three main groups :

1. Irregular verbs
2. Ru-verbs / Vowel verbs
3. U-verbs / Consonant verbs

While some verb conjugation forms apply the same rule across all three groups, for most conjugation forms each group has slightly different rules. For example, While Tai-form is just one rule "Drop -masu, add -tai" for all verbs, Nai-form has no rule for irregular verbs, one rule for Ru-/ Vowel verbs, and the other rule for U-/Consonant verbs.

These different rules for the three verb groups can be tricky to learn.

Using the practice examples on this website, you will become more familiar with how proper usage of verb conjugation can help you to communicate better!


① Do you want to know about the Japanese Verb Groups?

Japanese Verb Groups

- Categorizing verbs from masu-form

- Categorizing verbs from dictionary-form


② Do you want to practice the conjugation forms? There are 13 Conjugation forms! Click the link left side.


③ Are you using the following textbooks? You can check the lesson schedule of the verb conjugations.


Japanese for Busy People

Situational Functional Japanese


④ Do you want to review the conjugation forms?

Meanings & Politeness of 13 forms

13 Conjugation Rule Summary

All Quizzes of 13 forms


Copyright© 2015 Reiko Kondo All Rights Reserved. This site is created as a personal graduate project of Reiko Kondo at San Francisco State University.
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