1 day to seconds
1 d = 86,400 s. Change the amount below, or read the formula and the reference table further down.
1 day equals
seconds
1 d = 86,400 s
The formula
Days and seconds both measure time from the same zero, so a single multiplier does the job.
s = d × 86,400
Going the other way? Convert seconds to days.
Days to seconds table
Values either side of 1 d.
| Days (d) | Seconds (s) |
|---|---|
| -4 | -345,600 |
| -3.5 | -302,400 |
| -3 | -259,200 |
| -2.5 | -216,000 |
| -2 | -172,800 |
| -1.5 | -129,600 |
| -1 | -86,400 |
| -0.5 | -43,200 |
| 0 | 0 |
| 0.5 | 43,200 |
| 1 | 86,400 |
| 1.5 | 129,600 |
| 2 | 172,800 |
| 2.5 | 216,000 |
| 3 | 259,200 |
| 3.5 | 302,400 |
| 4 | 345,600 |
| 4.5 | 388,800 |
| 5 | 432,000 |
| 5.5 | 475,200 |
| 6 | 518,400 |
Questions people ask
- How many seconds are in a day?
- One day equals 86,400 seconds.
- How do I convert days to seconds by hand?
- Multiply the number of days by 86,400. For a rough check, 86,400 is close enough for most everyday use.
- What is 1 day in seconds?
- 1 day is 86,400 seconds.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.