How to say "helpful" in Japanese

Choosing the right word
  • 有用ゆうようCommon
    na-adjective, nounCovers the plain sense of 'helpful' as 'useful' — a thing, idea, or piece of information that serves a practical purpose. Your default choice when something helps you get something done.
    鉄てつは最もっとも有用ゆうような金属きんぞくです。↗
    Iron is the most useful metal.
  • 懇切こんせつCommon
    na-adjective, nounDescribes kind, careful, considerate help — typically patient and thorough instruction or explanation. For 'helpful' in the sense of a thoughtful, attentive person or explanation; not for tools or resources.
  • 重宝ちょうほうJLPT N1approx.Common
    na-adjective, nounEmphasizes convenience and handiness — something that proves handy to have around and you turn to repeatedly. Use it when 'helpful' shades into 'convenient' rather than simply 'useful'.
    車くるまは持もっていると重宝ちょうほうなものだ。↗
    A car is a handy thing to own.
  • 有益ゆうえきJLPT N1approx.Common
    na-adjective, nounMeans beneficial or profitable — something that brings real gain, value, or good results. Fits 'helpful' for advice, experience, or activities that pay off; less natural for a merely handy object.
    私にはとても有益ゆうえきだった。↗
    It was of great benefit to me.

Use 有用 for something practically useful, 重宝 for something handy and convenient, 有益 for something beneficial or profitable, and 懇切 only for kind, careful, thoughtful help with instruction or explanation.

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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