Translation guide
How to express the concept of 'uptime' in Japanese, covering IT/technical contexts, general operational continuity, and related expressions.
The time during which a computer system, server, or service is operational and available.
Standard term for operating time or uptime of machines and systems. Used in technical and business contexts.
サーバーの稼働時間は99.9%です。
The server uptime is 99.9%.
Loanword from English, commonly used in IT and tech industries. Often seen in reports and dashboards.
このサービスのアップタイムは非常に高い。
The uptime of this service is very high.
Refers to the operating rate or availability ratio, often expressed as a percentage. Closely related to uptime in technical metrics.
システムの稼働率を向上させる必要がある。
We need to improve the system's uptime rate.
The period during which a machine, device, or facility is running without interruption.
Same as above, but used for non-IT machinery like factory equipment, generators, etc.
この機械の稼働時間は1日20時間です。
This machine's uptime is 20 hours a day.
Emphasizes continuous operation without stopping. Common in industrial settings.
発電機の連続運転時間を記録してください。
Please record the generator's continuous uptime.
Casual reference to the time since a device or system was last started or rebooted.
Literally 'time since startup'. Used in casual tech conversations.
パソコンを起動してからの時間を調べる。
Check how long the computer has been up.
Very casual, spoken Japanese. Means 'how long has it been running?'. Not suitable for formal contexts.
このサーバー、どれくらい動いてる？
How long has this server been up?
稼働時間 is the native Japanese term and is widely understood across industries. アップタイム is a loanword used mainly in IT and may sound more technical or trendy. In formal documents, 稼働時間 is often preferred.
Do not translate 'uptime' as 上時間 or similar. These are not natural Japanese and will not be understood.
サーバーの稼働時間は99.99%です。
The server's uptime is 99.99%.
システムの稼働状況を24時間365日監視しています。
We monitor system uptime 24/7.
稼働状況 (operating status) is often used instead of a direct 'uptime' noun in natural Japanese.