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Spoken Japanese Verb Conjugator

Conjugate a Japanese verb, then compare the full textbook form with the shorter form you are likely to meet in conversation and subtitles.

ている → てる · てしまう → ちゃう · でしまう → じゃう · なければならない → なきゃ

Confirm ambiguous る verbs

The tool suggests a likely group, but verbs such as 帰る are godan even though they end in る. Keep the selector explicit so you remain in control.

Read the form inside a sentence

Conjugation gives you the shape. Context gives you the meaning. Send a form to the sentence analyzer to see what it contributes to a complete line.

Spoken Japanese conjugation FAQ

Why do Japanese subtitles use てる instead of ている?

In casual speech, the い in ている or でいる is frequently omitted. 食べている becomes 食べてる, and 読んでいる becomes 読んでる.

How do I know whether a る verb is ichidan or godan?

The ending alone is not always enough. Many verbs are ichidan, but common verbs such as 帰る and 走る are godan. Use a dictionary when the suggestion is uncertain.

What do ちゃう, じゃう, and なきゃ mean?

ちゃう contracts てしまう, じゃう contracts でしまう, and なきゃ is a casual shortening of an obligation pattern such as なければならない.