- While it's true that here are 86,400 seconds in a 24 hour period, a 'day' is not always 24 hours. When you consider standard US daylight savings time, there are 23 hours on the 'spring forward' day and 25 hours on the 'fall back' day, so those days have 82800 and 90000 seconds respectively.
- If the number of seconds in 1 day is 86400, then the number of seconds s in d days is s = 86400 d.
The riddle isn’t literally asking for the seconds (like 60 seconds in a minute) in a year, but the number of “seconds,” which would be numbers like January 2nd, February 2nd, March 2nd, etc. Ordinarily calculating the fractional portion of the JD is straightforward; the number of seconds that have elapsed in the day divided by the number of seconds in a day, 86,400. But if the UTC timescale is being used, a day containing a positive leap second contains 86,401 seconds (or in the unlikely event of a negative leap second, 86,399 seconds).
Online calculator to convert seconds to days (s to d) with formulas, examples, and tables. Our conversions provide a quick and easy way to convert between Time units.
Conversion Calculator
Enter your value in the conversion calculator below.
TIP: If the result of your conversion is 0, try increasing the 'Decimals'.
How to convert seconds to days: Enter a value in the seconds field and click on the 'Calculate days' button. Your answer will appear in the days field.
Conversion Definitions
The following is a list of definitions relating to conversions between seconds and days.
What is a second (s or sec)?
A second is a unit of time. The symbol for second is s or sec. There are 86,400 seconds in a day.
What is a day (d)?
A day is a unit of time. The symbol for day is d. There are 0.00001157 days in a second.
Conversion Formula
Let's take a closer look at the conversion formula so that you can do these conversions yourself with a calculator or with an old-fashioned pencil and paper.
Number Of Seconds In A Day In Scientific Notation
The formula to convert from seconds to days is:
Conversion Example
Next, let's look at an example showing the work and calculations that are involved in converting from seconds to days (s to d).
Second to Day Conversion Example
Conversion Table
For quick reference purposes, below is a conversion table that you can use to convert from seconds to days.
Seconds to Days Conversion Chart
| seconds (s) | days (d) |
|---|---|
| 1 seconds | 0.00001157 days |
| 2 seconds | 0.00002315 days |
| 3 seconds | 0.00003472 days |
| 4 seconds | 0.0000463 days |
| 5 seconds | 0.00005787 days |
| 6 seconds | 0.00006944 days |
| 7 seconds | 0.00008102 days |
| 8 seconds | 0.00009259 days |
| 9 seconds | 0.00010417 days |
| 10 seconds | 0.00011574 days |
| 20 seconds | 0.00023148 days |
| 30 seconds | 0.00034722 days |
| 40 seconds | 0.00046296 days |
| 50 seconds | 0.0005787 days |
| 75 seconds | 0.00086806 days |
| 100 seconds | 0.00115741 days |
| 250 seconds | 0.00289352 days |
| 500 seconds | 0.00578704 days |
| 750 seconds | 0.00868056 days |
| 1,000 seconds | 0.01157407 days |
| 2,500 seconds | 0.02893519 days |
| 5,000 seconds | 0.05787037 days |
| 7,500 seconds | 0.08680556 days |
| 10,000 seconds | 0.11574074 days |
| 25,000 seconds | 0.28935185 days |
| 50,000 seconds | 0.5787037 days |
| 75,000 seconds | 0.86805556 days |
| 100,000 seconds | 1.15740741 days |
| 250,000 seconds | 2.89351852 days |
Related Units
This table provides a summary of the Time units within their respective measurement systems.
| Unit | Symbol | Description |
|---|---|---|
| nanoseconds | ns | 1 second = 1,000,000,000 nanoseconds |
| microseconds | μs | 1 second = 1,000,000 microseconds |
| milliseconds | ms | 1 second = 1,000 milliseconds |
| seconds | s or sec | base unit of Time |
| kiloseconds | ks | 1,000 seconds = 1 kiloseconds |
| minutes | min | 1 minute = 60 seconds |
| hours | hr | 1 hours = 60 minutes |
| days | d | 1 day = 24 hours |
| weeks | wk | 1 week = 7 days |
| fortnights | 4tnite | 1 fortnight = 2 weeks or 14 days |
| months | mo | 1 month = 30.4167 days |
| years | yr or y | 1 year = 365 days |
| decades | decade | 1 decade = 10 years |
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