Days to hours
Convert fixed 24-hour durations. Calendar days across daylight-saving changes can differ.
Edit either value. Use a decimal point; commas group thousands. Rounding affects display only.
How to convert days to hours
Convert fixed 24-hour durations. Calendar days across daylight-saving changes can differ.
Formula coefficients shown rounded. Calculations use the stored factors before display rounding.
A worked example
For 10 d, the result is approximately 240 h. To go the other way, edit the result above or swap the units.
Days are fixed 24-hour durations and weeks are seven days. Calendar months and years vary and are excluded.
Where the numbers come from
Factors follow NIST conversion references and documented unit definitions. Read our accuracy and rounding notes.
The table and method describe this page’s original pair. Changing units above does not change this reference section.
| Days (d) | Hours (h) |
|---|---|
| 1 | 24 |
| 2 | 48 |
| 5 | 120 |
| 10 | 240 |
| 20 | 480 |
| 25 | 600 |
| 50 | 1200 |
| 100 | 2400 |
| 500 | 12000 |
| 1000 | 24000 |