Days to seconds converter
Seconds (s)
1 day = 86,400 seconds
How to convert days to seconds
s = d × 86400
Multiply the number of days by 86400 to get seconds. Going the other way, divide by 86400 (or multiply by 0.0000115740740741).
One day is exactly defined as 86400 seconds (to 12 significant figures), and one second is 0.0000115740740741 days.
Worked examples
- Convert 5 days: 5 × 86400 = 432,000 432,000 seconds.
- Convert 12.5 days: 12.5 × 86400 = 1,080,000 1,080,000 seconds.
- Convert 250 days: 250 × 86400 = 21,600,000 21,600,000 seconds.
Quick-reference table
| d | s |
|---|---|
| 1 | 86,400 |
| 2 | 172,800 |
| 3 | 259,200 |
| 5 | 432,000 |
| 10 | 864,000 |
| 15 | 1,296,000 |
| 20 | 1,728,000 |
| 25 | 2,160,000 |
| 50 | 4,320,000 |
| 75 | 6,480,000 |
| 100 | 8,640,000 |
| 1,000 | 86,400,000 |
| s | d |
|---|---|
| 1 | 0.00001157407407 |
| 2 | 0.00002314814815 |
| 3 | 0.00003472222222 |
| 5 | 0.00005787037037 |
| 10 | 0.0001157407407 |
| 15 | 0.0001736111111 |
| 20 | 0.0002314814815 |
| 25 | 0.0002893518519 |
| 50 | 0.0005787037037 |
| 75 | 0.0008680555556 |
| 100 | 0.001157407407 |
| 1,000 | 0.01157407407 |
Related conversions
Frequently asked questions
How many seconds are in 1 day?
1 day equals 86,400 seconds.
What is the formula to convert days to seconds?
Use s = d × 86400. Multiply the number of days by 86400 to get seconds. Going the other way, divide by 86400 (or multiply by 0.0000115740740741).
What is 100 days in seconds?
100 days is 8,640,000 seconds.