Translation guide
The English phrase "default value" refers to a preset or automatically assigned value used when no alternative is specified. In Japanese, this concept is expressed differently depending on context—such as computing, settings, or general use. This guide covers the most natural ways to express this idea.
A value automatically assigned to a variable, parameter, or setting when no explicit value is provided.
The most common and direct translation in technical contexts. Widely used in programming, software documentation, and IT.
この関数のデフォルト値は0です。
The default value of this function is 0.
Literally 'initial value'. Often used interchangeably with デフォルト値, but can also mean the value set at the start of a process, not necessarily a fallback.
変数の初期値を設定してください。
Please set the initial value of the variable.
Means 'prescribed value' or 'standard value'. More formal and often used in specifications or legal documents rather than everyday programming.
規定値が適用されます。
The default value will be applied.
A pre-selected option in a user interface, configuration, or system setting.
Refers to the default setting or configuration. Very common in software and device menus.
デフォルト設定に戻しますか？
Do you want to restore the default settings?
Literally 'initial settings'. Often used for factory defaults or out-of-the-box configuration.
A value assumed in the absence of other information; a standard or fallback.
Similar to 規定値 but slightly more common in general contexts. Means 'established value' or 'default'.
特に指定がない場合は既定値を使用します。
If not specified, the default value will be used.
Means 'standard value'. Used when a value is considered normal or typical, not necessarily a fallback.
このパラメータの標準値は10です。
The standard value for this parameter is 10.
デフォルト値 emphasizes a fallback when no input is given, while 初期値 emphasizes the value at the start. In many programming contexts they overlap, but デフォルト値 is more precise for 'default'.
引数が渡されない場合、デフォルト値が使われます。
If no argument is passed, the default value is used.
ループの前に初期値を代入します。
Assign the initial value before the loop.
Do not translate 'default value' word-for-word as 省略値 or 不履行値. These are not used in Japanese for this meaning. Stick to the terms listed above.
初期設定のまま使っています。
I'm using it with the default settings.