Days to Seconds Converter
1 day = 86,400 seconds
1 second = 0.00001157407 days
How to convert days to seconds
To convert days to seconds, multiply the value in days by 86,400.
s = d × 86,400
Example: 3 d × 86,400 = 259,200 s
Days to Seconds conversion table
| Day (d) | Second (s) |
|---|---|
| 1 d | 86,400 s |
| 2 d | 172,800 s |
| 3 d | 259,200 s |
| 4 d | 345,600 s |
| 5 d | 432,000 s |
| 6 d | 518,400 s |
| 7 d | 604,800 s |
| 8 d | 691,200 s |
| 9 d | 777,600 s |
| 10 d | 864,000 s |
| 12 d | 1,036,800 s |
| 15 d | 1,296,000 s |
| 20 d | 1,728,000 s |
| 25 d | 2,160,000 s |
| 30 d | 2,592,000 s |
| 40 d | 3,456,000 s |
| 50 d | 4,320,000 s |
| 60 d | 5,184,000 s |
| 70 d | 6,048,000 s |
| 75 d | 6,480,000 s |
| 80 d | 6,912,000 s |
| 90 d | 7,776,000 s |
| 100 d | 8,640,000 s |
| 150 d | 12,960,000 s |
| 200 d | 17,280,000 s |
| 250 d | 21,600,000 s |
| 500 d | 43,200,000 s |
| 1,000 d | 86,400,000 s |
About these units
Day (d)
The day (d) is a metric unit of time accepted for use with the SI. 1 day equals 86,400 seconds. This value is exact by definition.
Second (s)
The second (s) is a unit of time in the International System of Units (SI). It is the reference unit for all time conversions on this site.
Frequently asked questions
What is 1 day in seconds?
1 day equals 86,400 seconds.
How do I convert days to seconds?
To convert days to seconds, multiply the value in days by 86,400. Example: 3 d × 86,400 = 259,200 s
What is 3 d in seconds?
3 days equals 259,200 seconds.