How to convert days to hours
Days and Hours both measure time, so converting is a single multiplication. One d equals 24 h, so you multiply your days value by 24.
Formula: hours = days × 24. For example, 10 d = 240 h.
Days to Hours conversion table
| Days (d) | Hours (h) |
|---|---|
| 1 | 24 |
| 2 | 48 |
| 5 | 120 |
| 10 | 240 |
| 25 | 600 |
| 50 | 1,200 |
| 100 | 2,400 |
| 1,000 | 24,000 |
Days and Hours explained
Days (d): Twenty-four hours (86,400 seconds).
Hours (h): Sixty minutes (3,600 seconds).
When you'd convert days to hours
You'll convert days to hours whenever a measurement is given in one unit but you need it in the other — comparing days and hours figures across regions, following a recipe or spec, or double-checking a number. Because 1 d is exactly 24 h, the result is precise every time.
Frequently asked questions
How many hours are in a day?
One d equals 24 h. Multiply your days figure by 24 to get hours.
What is the formula to convert days to hours?
hours = days × 24. The factor 24 is exact.
What is 2 days in hours?
2 d = 48 h. You can enter any value in the converter above to get an instant result.
Is this Days to Hours converter accurate?
Yes. It uses the standard conversion factor (1 d = 24 h) defined by BIPM — SI Brochure (definition of the second), so results are exact to several decimal places.