Translation guide
The English word 'beneficial' describes something that produces good effects or is helpful. In Japanese, this concept is expressed through various adjectives, verbs, and set phrases depending on what is being described and the level of formality.
Expressing that something is good for health, growth, or general well-being.
A common and neutral word meaning 'beneficial' or 'profitable'. Often used for knowledge, advice, or activities.
この本はとても有益です。
This book is very beneficial.
有益な情報をありがとう。
Thank you for the beneficial information.
A very common, slightly casual phrase meaning 'to be beneficial' or 'to be good for one'. Literally 'to become for one's benefit'.
この経験はためになる。
This experience is beneficial.
ためになる話を聞いた。
I heard a beneficial story.
Means 'to be useful' or 'to be of help'. Often used for practical benefits.
この道具はとても役に立つ。
This tool is very beneficial.
Describing something that is good for physical or mental health.
Literally 'good for the body'. The most natural way to say something is healthy or beneficial for one's health.
野菜は体にいい。
Vegetables are beneficial for your health.
A slightly more formal version of '体にいい', meaning 'good for health'.
運動は健康に良い。
Exercise is beneficial for health.
A formal, written expression meaning 'beneficial to health'. Used in articles or reports.
この食品は健康に有益な成分を含む。
This food contains ingredients beneficial to health.
Expressing that something is beneficial for both parties.
Means 'to be beneficial for each other'. A natural way to express mutual benefit.
この協力はお互いのためになる。
This cooperation is mutually beneficial.
A noun meaning 'mutual benefit'. More formal and often used in business contexts.
相互利益をもたらす取引
A transaction that brings mutual benefit
Describing financial or economic advantages.
Also used for economic benefits, meaning 'profitable' or 'advantageous'.
その投資は有益だった。
That investment was beneficial.
Literally 'to become profit'. Used when something results in financial gain.
この事業は会社の利益になる。
This project is beneficial for the company's profits.
有益 (ゆうえき) is a formal, written word often used for abstract benefits like knowledge. ためになる is casual and implies personal growth or learning. 役に立つ (やくにたつ) emphasizes practical usefulness. For health, use 体にいい (からだにいい) or 健康に良い (けんこうにいい).