Japanese verb conjugator
Search in English or Japanese, choose a verb from N5 through N1, and see its most useful forms together.
Why verb class matters
The dictionary form is the verb you look up, such as 食べる (“to eat”). To say “eat,” “ate,” or “eating,” you change its ending. A verb class is simply the rule for changing that ending. The て-form below helps connect actions and make requests.
Group 1: Godan
Godan means “five steps.” The last sound shifts when you make a new form: 書く (“to write”) becomes 書きます or 書いて. Some る verbs, including 帰る (“to go home”), belong to this group too.
Group 2: Ichidan
Ichidan means “one step.” These verbs end in る. Remove る and keep the rest: 食べる becomes 食べます (“eat” politely) or 食べて (its て-form).
Irregular verbs
Two everyday verbs have their own patterns: する (“to do”) becomes します and して; 来る (“to come”) becomes 来ます and 来て.
A る ending alone does not tell you the group. This tool uses reviewed classes, including the special て-form 行く → 行って.
Explore beginner grammar for patterns in context.