Days to Hours Converter
Convert days (days) to hours (h) instantly. Type a value — the result updates as you type, and the swap button converts the other way.
Days to Hours formula
h = days × 24
1 day = 24 hours · 1 hour = 0.0417 days
To convert days to hours, multiply the value by 24. For example, 3 days:
h = 3 × 24h = 72
So 3 days = 72 h.
Mental math shortcut
This conversion is exact, so there is no need to estimate: just multiply by 24.
Days to Hours conversion table
Hours back to Days
The same values converted the other way, rounded for everyday use:
| Hours | Days |
|---|---|
| 12 h | 0.5 days |
| 24 h | 1 days |
| 48 h | 2 days |
| 72 h | 3 days |
| 120 h | 5 days |
| 168 h | 7 days |
| 336 h | 14 days |
| 720 h | 30 days |
About the units
Days (days)
A day is 24 hours (86,400 seconds).
Hours (h)
An hour is 60 minutes or 3,600 seconds.
Frequently asked questions
How many hours are in a day?
One day equals 24 hours.
What is 3 Days in Hours?
3 days = 72 h.
How do I convert Hours back to Days?
Divide the hours by 24. Or use the Hours to Days converter.