hours to days
This converter makes instant conversions from hours to days as time duration. To use the converter, please provide a value in the input field. The converter will begin making conversions as the values are being typed in. To add or subtract time from a date, please use our date calculator. To add, subtract, multiply, and divide time, please use our time calculator. To calculate the time between two dates, please use our days calculator.
How many days in a hour?
ISO 8601 is an international standard covering the worldwide exchange and communication of date and time-related data. ISO 8601 uses the 24-hour clock system, which means there are 24 hours in a day, 60 minutes in an hour, and 60 seconds in a minute. Based on this standard, there are 
≈ 0.041666667 days in a hour.
How to convert hours to days
Based on the definition of 24 hours in a day, the hour to day conversion formula is:
| day = |
|
Thus, to convert from hours to days, divide a value in hours by 24. For example, convert 45 hours to days:
| 45 hr = |
|
d = 1.875 d |