Translation guide
The English word "interface" covers physical connection points, user-facing software screens, and abstract points of interaction between systems or people. This guide helps learners choose the right Japanese expression for each meaning.
The visual and interactive part of a computer program, website, or app that a person uses.
The most common and direct loanword for 'interface' in IT and everyday tech contexts. Often used in compounds like ユーザーインターフェース (user interface).
このアプリのインターフェースはとても使いやすい。
This app's interface is very easy to use.
新しいユーザーインターフェースをデザインしています。
We are designing a new user interface.
Abbreviation for 'user interface', very common in tech and business settings. Often used in compounds like UIデザイン.
UIの改善が必要だ。
The UI needs improvement.
Literally 'screen', but often used to refer to the interface or display of a device or application in everyday conversation.
この画面から設定を変えられます。
You can change the settings from this screen.
A point where two devices or systems connect physically, such as a USB port or cable connector.
Also used for hardware interfaces, though sometimes specified as ハードウェアインターフェース.
このプリンターのインターフェースはUSBです。
This printer's interface is USB.
Literally 'connection port' or 'connector'. Used for physical sockets and plugs.
Refers to a terminal or connector, often in electrical or electronic contexts. More technical than 接続口.
The boundary or meeting point where two different groups, systems, or disciplines interact and communicate.
Used metaphorically in business, science, and engineering to describe the point of interaction between different entities.
営業と開発の間のインターフェースを改善する必要がある。
We need to improve the interface between sales and development.
Literally 'point of contact'. Used for interfaces between people, departments, or fields. More natural in non-technical contexts.
Literally 'boundary surface'. Used in scientific or engineering contexts to describe the physical interface between materials or phases.
二つの液体の境界面で反応が起こる。
The reaction occurs at the interface between the two liquids.
While インターフェース is widely understood, using it for everyday human interactions can sound unnatural or overly technical. In casual conversation, prefer words like 接点 or rephrase the sentence.
彼とはなかなか接点が持てない。
I can't seem to find common ground with him.
パソコンの背面にいろいろな接続口がある。
There are various connection ports on the back of the PC.
What is this terminal used for?
両者の接点を見つけるのが難しい。
It's difficult to find an interface between the two parties.