How to say "equivalence" in Japanese

• 対応たいおうJLPT N1approx.Common
  noun, suru verb, intransitive verbCovers equivalence in the sense of correspondence — a one-to-one relationship or mapping between items in two sets, as in translations, elements, or data that correspond to each other.
  その日本語にほんごに対応たいおうする英語えいごはない。↗

  That Japanese word has no equivalent in English.
• 等価とうかCommon
  no-adjectiveThe usual word for equivalence in the strict sense of equal value or logical/mathematical equivalence, as in equivalent circuits, equations, or propositions considered identical in worth.
  １ドルは現在げんざい１１０円えんと等価とうかである。↗

  One dollar is equivalent to 110 yen.
• 同等どうとうJLPT N1approx.Common
  na-adjective, no-adjectiveEquivalence as equal standing rather than equal value: equality of rights, rank, or status. Use it when two parties or things are on the same level or treated as equals.
  １メートルは１ヤードとは完全かんぜんに同等どうとうではない。↗

  A meter is not quite equivalent to a yard.
• パーCommon
  nounMainly a finance term meaning par or face value, as bonds trading at par. As a translation of 'equivalence' it is narrow and seldom the word you want outside money contexts.

For technical or mathematical equivalence use 等価; for relationships or correspondence between things use 対応; for equal status or rank use 同等; 「パー」 is largely limited to finance ('par value').

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

• 対応たいおうcorrespondence (to)
• 等価とうかequivalence
• 同等どうとうequality
• 等価値とうかちequivalence
• 対当たいとうopposition
• 等値とうちequal value
• 同値どうち(logical) equivalence
• パーequivalence