How to say "equal" in Japanese

Choosing the right word
  • 同じおなじJLPT N5approx.Common
    prenominal modifier, na-adjectiveThis is really the word for 'same' or 'identical'; its 'equal' sense means simply that two things are the same. For strict or mathematical equality, 等しい is the precise choice.
    Jazz uses the same notes that Bach used.
  • 等しいひとしいJLPT N3approx.Common
    i-adjectiveThe precise word for equality itself: stating that two amounts, values, or things are equal, as in mathematics. When 'equal' is meant strictly rather than as 'the same', this is the word.
    1ヤードは3フィートに等ひとしい。↗
    A yard is equal to three feet.
  • 均等きんとうCommon
    na-adjective, no-adjectiveCovers 'equal' in the sense of even or uniform: equal distribution, equal treatment, or things being at an equal level. Use it when something is divided or spread out equally.
    ガスストーブは料理りょうりするのに最もっとも均等きんとうな熱ねつを供給きょうきゅうする。↗
    A gas stove provides the most even heat for cooking.
  • イコールJLPT N2approx.Common
    na-adjectiveThe loanword 'equal': the name of the equals sign in mathematics, or a statement that one thing equals or is equivalent to another. For describing things as equal it is seldom the word you want.
  • 互角ごかくCommon
    no-adjective, na-adjectiveCovers 'equal' only in the sense of ability: two opponents, teams, or sides that are evenly matched. It does not describe equal amounts, sizes, or values — only the balance between two competitors.
    私と互角ごかくで渡り合わたりあえる女の子おんなのこでなければだめだ。↗
    The girl has to match me in skill.

Choose 「同じ」 for 'the same', 「等しい」 for strict equality as in mathematics, 均等 for equal distribution, treatment, or level, 「イコール」 for the equals sign and 'equals' statements, and 互角 for evenly matched ability.

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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