Convert Days to Hours
One day equals 24 hours. Type any value to convert days to hours instantly — with a full reference table below.
Convert Days to Hours
Converted in your browser — nothing you enter is sent anywhere.
How to convert Days to Hours
To convert days to hours, multiply by 24. One day equals 24 hr, and one hour equals 0.0416667 d.
- Take the value in days — for example 7.5 d.
- Multiply by 24 (the number of hours in one day).
- 7.5 × 24 = 180 hr.
Quick mental estimate: Multiply the number of days by 24 — that is exact.
Days to Hours conversion table
| Days | Hours |
|---|---|
| 1 d | 24 hr |
| 2 d | 48 hr |
| 3 d | 72 hr |
| 5 d | 120 hr |
| 10 d | 240 hr |
| 15 d | 360 hr |
| 20 d | 480 hr |
| 30 d | 720 hr |
| 45 d | 1,080 hr |
| 60 d | 1,440 hr |
| 90 d | 2,160 hr |
| 120 d | 2,880 hr |
| 365 d | 8,760 hr |
| Hours | Days |
|---|---|
| 1 hr | 0.0416667 d |
| 2 hr | 0.0833333 d |
| 3 hr | 0.125 d |
| 5 hr | 0.208333 d |
| 10 hr | 0.416667 d |
| 15 hr | 0.625 d |
| 20 hr | 0.833333 d |
| 30 hr | 1.25 d |
| 45 hr | 1.875 d |
| 60 hr | 2.5 d |
| 90 hr | 3.75 d |
| 120 hr | 5 d |
| 365 hr | 15.20833 d |
About converting Days to Hours
Days (d) and Hours (hr) are both units of time. The exact factor is 1 d = 24 hr, so multiply by 24 to go from days to hours (or divide to go back).
The conversion runs entirely in your browser. Need the reverse? Use the Hours to Days converter, or the full unit converter for every unit at once.
Real-world time in days and hours
| Example | Days | Hours |
|---|---|---|
| A typical work day (8 h) | 0.333333 d | 8 hr |
| A full-time work year (2,080 h) | 86.66667 d | 2,080 hr |
| A common year (365 days) | 365 d | 8,760 hr |
| A leap year (366 days) | 366 d | 8,784 hr |
“≈” marks typical values; the rest are defined or measured figures.
The units
24 hours, 86,400 seconds (ignoring rare leap seconds).
Used for: Calendars and deadlines.
60 minutes, 3,600 seconds.
Used for: Work, travel and billing.
Seconds, minutes, hours, days and weeks are exact. Months and years are averages of the Gregorian calendar (a year of 365.2425 days, a month of 30.436875 days), because real months and years vary in length.