Convert hours to days
Enter a value in hours to convert it to days.
hours to days reference
| hours | days |
|---|---|
| 1 h | 0.0417 d |
| 2 h | 0.0833 d |
| 5 h | 0.2083 d |
| 10 h | 0.4167 d |
| 25 h | 1.0417 d |
| 50 h | 2.0833 d |
| 100 h | 4.1667 d |
The conversion factor
One hour is 0.04166667 days. So to convert, multiply your figure in hours by 0.04166667. To go the other way, multiply days by 24, or use the days to hours converter.
Doing it in your head
For a quick estimate, round the factor: roughly "divide by 24". Use the exact converter above when the number matters.
Where this conversion comes up
Durations in code and spreadsheets, timeouts, and project estimates.
See the common unit conversions cheat sheet for the factors worth memorising.
Related tools
Frequently asked questions
How many days are in a hour?
1 hour = 0.041667 days.
What is the formula to convert hours to days?
Multiply the number of hours by 0.04166667. To go back the other way, multiply days by 24.
What is 10 hours in days?
10 hours = 0.4167 days. The reference table below lists more common values.
Is this converter accurate?
It uses the internationally defined conversion factors and computes at full floating-point precision, then rounds only the displayed result. For everyday purposes it is exact; for legal, engineering or scientific work, confirm the required number of significant figures.
Does it work offline?
Yes. The conversion runs in your browser with no server call, so it keeps working with no connection, and nothing you enter is uploaded.
Last reviewed: September 2026. Figures and formulas are checked against their published sources; see the site's data notes.