›› Convert day to second


›› More information from the unit converter

How many day in 1 s? The answer is 1.1574074074074E-5.
We assume you are converting between day and second.
You can view more details on each measurement unit:
day or s
The SI base unit for time is the second.
1 day is equal to 86400 second.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between days and seconds.
Type in your own numbers in the form to convert the units!

›› Date difference between calendar days

You may also want to find out how many days are between two dates on the calendar. Use the date calculator to get your age in days or measure the duration of an event.

›› Quick conversion chart of day to s

1 day to s = 86400 s

2 day to s = 172800 s

3 day to s = 259200 s

4 day to s = 345600 s

5 day to s = 432000 s

6 day to s = 518400 s

7 day to s = 604800 s

8 day to s = 691200 s

9 day to s = 777600 s

10 day to s = 864000 s

›› Want other units?

You can do the reverse unit conversion from s to day, or enter any two units below:

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›› Common time conversions

day to microsecond
day to decade
day to year
day to week
day to fortnight
day to minute
day to quarter
day to shake
day to month
day to hour

›› Definition: Day

A continuous period of 24 hours which, unless the context otherwise requires, runs from midnight to midnight.

›› Definition: Second

The second (symbol s) is a unit for time, and one of seven SI base units. It is defined as the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium-133 atom at zero kelvins.

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ConvertUnits.com provides an online conversion calculator for all types of measurement units. You can find metric conversion tables for SI units, as well as English units, currency, and other data. Type in unit symbols, abbreviations, or full names for units of length, area, mass, pressure, and other types. Examples include mm, inch, 100 kg, US fluid ounce, 6'3", 10 stone 4, cubic cm, metres squared, grams, moles, feet per second, and many more!