1 day = 24 hr
| Day (day) | Hour (hr) |
|---|---|
| 0.25 | 6 |
| 0.5 | 12 |
| 0.75 | 18 |
| 1 | 24 |
| 1.5 | 36 |
| 2 | 48 |
| 3 | 72 |
| 4 | 96 |
| 5 | 120 |
| 6 | 144 |
| 7 | 168 |
| 10 | 240 |
| 14 | 336 |
| 21 | 504 |
| 28 | 672 |
| 30 | 720 |
| 31 | 744 |
| 60 | 1440 |
| 90 | 2160 |
| 365 | 8760 |
To convert days to hours, multiply the number of days by 24.
1 day = 24 hr
Convert 7 days (one week) to hours: 7 × 24 = 168 hours
Convert 30 days to hours: 30 × 24 = 720 hours
To convert hours to days, divide the hours by 24.
\u2022 2 days (48 hours) is a standard weekend.
\u2022 5 days (120 hours) is a standard work week.
\u2022 30 days (720 hours) is approximately one month.
\u2022 365 days (8,760 hours) is one year.
Days to hours is a fundamental time conversion used in project management, shipping, medicine, and everyday planning.
When a deadline is "3 days away," that’s 72 hours. Breaking deadlines into hours helps with realistic planning. A 5-day project has 120 total hours, but with 8-hour workdays, only 40 hours of actual work time. This perspective helps avoid overcommitting.
Shipping times are often quoted in days but tracked in hours. "2-day shipping" means delivery within 48 hours of dispatch. Understanding this in hours helps set realistic expectations, especially when weekends and holidays are involved.
Medical instructions often specify time in hours ("take every 8 hours") or days ("continue for 10 days"). A 10-day course of medication taken every 8 hours means 30 doses over 240 hours. Lab experiments and incubation periods are tracked in both units.
One day equals exactly 24 hours.
7 days equals 168 hours.
A 30-day month has 720 hours. A 31-day month has 744 hours. February has 672 hours (or 696 in a leap year).
A standard year has 8,760 hours. A leap year has 8,784 hours.