How to say "therefore" in Japanese

Choosing the right word
  • したがってJLPT N3approx.Common
    conjunctionThe connector of careful, often written argument: it draws a firm conclusion from what precedes it, and is at home in essays, reports, and formal explanations.
    したがって、すべての政治的せいじてき理想りそうの中なかで、人々ひとびとを幸しあわせにさせるものがもっとも危険きけんであると言いうことができる。↗
    Hence one can say that, of all political ideals, that of making people happy is the most dangerous.
  • ゆえにCommon
    conjunctionA bookish 'therefore' suited to solemn or literary statements; in casual conversation it can sound stiff, so it is seldom the word you want there.
    ゆえに、筋肉きんにくの50パーセントが脂肪しぼうに取とって代かわられる可能性かのうせいがある。↗
    Hence 50 percent of the muscle can give way to fat.
  • それでJLPT N4approx.Common
    conjunctionThe everyday 'so': it presents something as a natural consequence of what came before, and also serves as 'and then' to move a story along — looser than a strictly logical 'therefore'.
    雨あめがひどく降ふってきた、それで私わたしたちは屋内おくないで遊あそんだ。↗
    It was raining hard, so we played indoors.
  • だからJLPT N4approx.Common
    conjunctionThe plain, all-purpose 'so/therefore' of everyday conversation and informal writing: it states a straightforward cause-and-effect conclusion, without the polite coloring of ですから.
    1日にち中ちゅうテニスをしていたのだから。↗
    He was playing tennis all day.
  • ですからJLPT N3approx.Common
    conjunctionThe polite counterpart of だから: it draws the same everyday 'so/therefore' conclusion while keeping the tone courteous; use it in polite conversation where だから would sound too casual.
    いいえ、結構けっこうです。お腹なかが一杯いっぱいですから。↗
    No, thank you. I've had enough.

Choose 「したがって」 for firm conclusions in careful or written argument, 「ゆえに」 for literary or solemn statements, 「それで」 for loose conversational 'so', 「だから」 for plain everyday speech, and 「ですから」 when politeness is called for.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

Japanese equivalents
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JLPT vocabulary levels are community estimates, not official (no official lists have been published since the 2010 revision).

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