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.
The server uptime is 99.9%.
Loanword from English, commonly used in IT and tech industries. Often seen in reports and dashboards.
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.
We need to improve the system's uptime rate.
The period during which a machine, device, or facility is running without interruption.
Casual reference to the time since a device or system was last started or rebooted.
Literally 'time since startup'. Used in casual tech conversations.
Check how long the computer has been up.
Very casual, spoken Japanese. Means 'how long has it been running?'. Not suitable for formal contexts.
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.
The server's uptime is 99.99%.
We monitor system uptime 24/7.
稼働状況 (operating status) is often used instead of a direct 'uptime' noun in natural Japanese.
Please record the generator's continuous uptime.