# Seconds to Days

**According to Wikipedia:**

*The second (symbol: s, also abbreviated: sec) is the unit of time in the International System of Units (SI), historically defined as 1⁄86400 of a day – this factor is derived from the division of the day first into 24 hours, then to 60 minutes and finally to 60 seconds each (24 × 60 × 60 = 86400).*

*Analog clocks and watches often have sixty tick marks on their faces, representing seconds (and minutes), and a “second hand” to mark the passage of time in seconds. Digital clocks and watches often have a two-digit seconds counter.*

*SI prefixes are frequently combined with the word second to denote subdivisions of the second: milliseconds (thousandths), microseconds (millionths), nanoseconds (billionths), and sometimes smaller units of a second. *

*Multiples of seconds are usually counted in hours and minutes. *

*Though SI prefixes may also be used to form multiples of the second such as kiloseconds (thousands of seconds), such units are rarely used in practice. *

*An everyday experience with small fractions of a second is a 1-gigahertz microprocessor which has a cycle time of 1 nanosecond. *

*Camera shutter speeds are often expressed in fractions of a second, such as ^{1}⁄_{30} second or ^{1}⁄_{1000} second.*

## How to calculate the number of days from seconds?

One day has 24 hours. 1 hour has 60 minutes. 1 minute has 60 seconds.

Thus, the total number of seconds in a day = 24 x 60 x 60 = 86400 seconds.

Thus,

If 86400 seconds = 1 day

Then,

1 second = 1⁄86400 days

Therefore,

N seconds = (1⁄86400) x N days

With this formula,

10,000 seconds = (1⁄86400) x 10,000 = 0.115740740740740 days.

In simple words,

**Divide the number of seconds by 86400 to get the number of days.**