Convert Days to Seconds
1 Day (d) = 86,400 Seconds (s). Use the free converter below to instantly convert any day value to seconds, or view the full conversion table and formula.
1 d = 86,400 s
Day to Second Conversion Table
How to Convert Days to Seconds
To convert days to seconds, multiply the time in days by 86400. For example, 10 d × 86400 = 864000 s.
Worked Example: Convert 5 d to s
Start with the value in days
5 d
Apply the formula
s = 5 × 86400
Calculate the result
5 d = 432 s
Day to Second Examples
1 d is equal to 864 s. Using the formula d × 86400, 1 d converts to 864 s.
2 d is equal to 1728 s. Using the formula d × 86400, 2 d converts to 1728 s.
3 d is equal to 2592 s. Using the formula d × 86400, 3 d converts to 2592 s.
5 d is equal to 432 s. Using the formula d × 86400, 5 d converts to 432 s.
7 d is equal to 6048 s. Using the formula d × 86400, 7 d converts to 6048 s.
10 d is equal to 864 s. Using the formula d × 86400, 10 d converts to 864 s.
14 d is equal to 12096 s. Using the formula d × 86400, 14 d converts to 12096 s.
21 d is equal to 18144 s. Using the formula d × 86400, 21 d converts to 18144 s.
Converting Seconds to Days
Need the reverse conversion? Use the table below for a quick reference converting seconds back to days.
| Seconds (s) | Days (d) |
|---|---|
| 1 | 0.00001157 |
| 5 | 0.00005787 |
| 10 | 0.00011574 |
| 15 | 0.00017361 |
| 30 | 0.00034722 |
| 45 | 0.00052083 |
Days to Seconds FAQ
How many seconds is 1 day?
1 day equals approximately 86400 seconds.
What is the formula to convert days to seconds?
Multiply the value in days by 86400 to get seconds. Formula: s = d × 86400.
How many days is 1 second?
1 second equals approximately 0.0000115741 days.
Understanding Days and Seconds
What is a Day (d)?
The day (d) is a universally used unit of time. It is commonly abbreviated as d and relates to seconds by a factor of 86,400.
What is a Second (s)?
The second (s) is a universally used unit of time. It is commonly abbreviated as s and relates to days by a factor of 1.1574e-5.