Convert days to hours
1 d = 24 h — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
24h
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1 d = 24 h
Show this value in all 22 time units
- Kiloseconds ks 86.4
- Seconds s 86 400
- Milliseconds ms 86 400 000
- Microseconds µs 86 400 000 000
- Nanoseconds ns 86 400 000 000 000
- Picoseconds ps 8.64e+16
- Femtoseconds fs 8.64e+19
- Attoseconds as 8.64e+22
- Minutes min 1440
- Hours h 24
- Days d 1
- Weeks wk 0.142 857 142 857
- Fortnights fn 0.071 428 571 428 6
- Month (average)s mo 0.032 854 884 083 9
- Year (Gregorian)s yr 0.002 737 907 006 99
- Year (Julian)s a 0.002 737 850 787 13
- Year (tropical)s a (trop) 0.002 737 909 330 79
- Decades dec 0.000 273 790 700 699
- Centuries c 0.000 027 379 070 069 9
- Millennia ka 0.000 002 737 907 006 99
- Shakes shake 8 640 000 000 000
- Planck times tₚ 1.60259769215e+48
Every row is Day (d) converted through the second, in exact rational arithmetic.
How to convert days to hours
Multiply the number of days by 24 to get hours.
The exact factor is 24 .
Day: The mean solar day of exactly 86 400 SI seconds; the real Earth wobbles.
Day to Hour conversion table
| Days (d) | Hours (h) |
|---|---|
| 1 d | 24 |
| 2 d | 48 |
| 3 d | 72 |
| 5 d | 120 |
| 10 d | 240 |
| 20 d | 480 |
| 25 d | 600 |
| 50 d | 1200 |
| 100 d | 2400 |
| 250 d | 6000 |
| 500 d | 12 000 |
| 1000 d | 24 000 |
Hour to Day conversion table
| Hours (h) | Days (d) |
|---|---|
| 1 h | 0.041 666 667 |
| 2 h | 0.083 333 333 |
| 3 h | 0.125 |
| 5 h | 0.208 333 33 |
| 10 h | 0.416 666 67 |
| 20 h | 0.833 333 33 |
| 25 h | 1.041 666 7 |
| 50 h | 2.083 333 3 |
| 100 h | 4.166 666 7 |
| 250 h | 10.416 667 |
| 500 h | 20.833 333 |
| 1000 h | 41.666 667 |
Frequently asked
How many hours are in a day?
One day equals 24 hours (d → h). That figure is exact, not rounded.
How do you convert days to hours?
Multiply the number of days by 24 to get hours.
What is 1 h in days?
One hour is 0.04166666667 days.
What is 10 d in h?
10 d = 240 h.
What exactly is a day?
The mean solar day of exactly 86 400 SI seconds; the real Earth wobbles.