Second to Day Converter
Second to Day Formula
Conversion explanation: Divide the value in Second by 86400 to get the equivalent value in Day.
Popular time unit conversions
What is Second to Day Converter
This second to day converter translates time durations from seconds (s) to days (d). It applies the standard time conversion factor where 1 day is equal to exactly 86,400 seconds. For related calculations, you can also check our second to millisecond conversion tool.
Definitions of Second and Day
What is Second?
The second is the base unit of time in the International System of Units. It is defined by the unperturbed ground-state hyperfine transition frequency of cesium-133. For related unit metrics, you can use our millisecond to second conversion tool.
What is Day?
A day is a unit of time conventionally defined as 24 hours or 86,400 seconds. It roughly corresponds to one complete rotation of the Earth on its axis. If you need to make other calculations, see our second to minute conversion tool.