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1 d = 24 h
Open in Unit ConverterFormula
h = d × 24
How to convert
To convert days to hours, multiply the value by 24. For example, 2 d = 48 h.
Conversion table
| Days (d) | Hours (h) |
|---|---|
| 1 d | 24 h |
| 2 d | 48 h |
| 3 d | 72 h |
| 5 d | 120 h |
| 7 d | 168 h |
| 10 d | 240 h |
| 14 d | 336 h |
| 30 d | 720 h |
| 90 d | 2,160 h |
| 365 d | 8,760 h |
About these units
The second is the SI unit of time. 1 second = 1,000 milliseconds, 1 minute = 60 seconds, 1 hour = 60 minutes = 3,600 seconds and 1 day = 24 hours = 86,400 seconds. Programming APIs use milliseconds (JavaScript's Date.now(), timeouts) or seconds (Unix timestamps), so mixing them up is a common off-by-1,000 bug. Days with a daylight saving change last 23 or 25 hours; this converter uses fixed 24-hour days.
FAQ
› How do I convert d to h?
1 d = 24 h. To convert, multiply the value by 24: 2 d = 48 h.
› What is 1 h in d?
1 h = 0.04166666667 d. The reverse formula is d = h ÷ 24.
› How many milliseconds are in a minute?
60,000. A minute has 60 seconds and each second has 1,000 milliseconds.
› How many seconds are in a day?
86,400 in a standard 24-hour day. Leap seconds and daylight saving changes are ignored here.