1 day (d) = 24 hours (h). To convert, multiply by 24: h = d × 24. For example, 5 d = 120 h.
h = d × 24
Days to hours table
| Days (d) | Hours (h) |
|---|---|
| 1 | 24 |
| 2 | 48 |
| 3 | 72 |
| 4 | 96 |
| 5 | 120 |
| 10 | 240 |
| 20 | 480 |
| 25 | 600 |
| 50 | 1,200 |
| 100 | 2,400 |
| 250 | 6,000 |
| 500 | 12,000 |
| 1,000 | 24,000 |
The two units
Day (d). 24 hours. Days with a leap second or a daylight-saving change are longer or shorter.
Hour (h). Sixty minutes.
Because both units are defined in terms of the same base unit, the factor 24 is exact, not a rounded measurement.
Convert days to other units
- Days to seconds — 1 d = 86,400 s
- 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 weeks — 1 d = 0.1428571429 wk
- Days to years (365 days) — 1 d = 0.002739726 yr
Convert other units to hours
Questions people ask
- How many hours are in a day?
- 24, exactly.
- How do you convert days to hours?
- h = d × 24. It is the same as dividing by 0.0416666667.
- How do you convert hours back to days?
- d = h ÷ 24. See hours 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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