1 day (d) = 86,400 seconds (s). To convert, multiply by 86,400: s = d × 86,400. For example, 5 d = 432,000 s.
s = d × 86,400
Days to seconds table
| Days (d) | Seconds (s) |
|---|---|
| 1 | 86,400 |
| 2 | 172,800 |
| 3 | 259,200 |
| 4 | 345,600 |
| 5 | 432,000 |
| 10 | 864,000 |
| 20 | 1,728,000 |
| 25 | 2,160,000 |
| 50 | 4,320,000 |
| 100 | 8,640,000 |
| 250 | 21,600,000 |
| 500 | 43,200,000 |
| 1,000 | 86,400,000 |
The two units
Day (d). 24 hours. Days with a leap second or a daylight-saving change are longer or shorter.
Second (s). The SI unit of time, defined by the caesium-133 atom's hyperfine transition frequency.
Because both units are defined in terms of the same base unit, the factor 86,400 is exact, not a rounded measurement.
Convert days to other units
- Days to milliseconds — 1 d = 86,400,000 ms
- Days to microseconds — 1 d = 86,400,000,000 µs
- Days to nanoseconds — 1 d = 86,400,000,000,000 ns
- Days to minutes — 1 d = 1,440 min
- Days to hours — 1 d = 24 h
- Days to weeks — 1 d = 0.1428571429 wk
- Days to years (365 days) — 1 d = 0.002739726 yr
Convert other units to seconds
Questions people ask
- How many seconds are in a day?
- 86,400, exactly.
- How do you convert days to seconds?
- s = d × 86,400. It is the same as dividing by 0.0000115741.
- How do you convert seconds back to days?
- d = s ÷ 86,400. See seconds to days.
Results use the legal definitions of each unit and are checked against the Pint unit library. Display rounds to 10 significant digits. All unit conversions · More tools
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