›› Convert hour to day


›› More information from the unit converter

How many hours in 1 day? The answer is 24.
We assume you are converting between hour and day.
You can view more details on each measurement unit:
hours or day
The SI base unit for time is the second.
1 second is equal to 0.00027777777777778 hours, or 1.1574074074074E-5 day.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between hours and days.
Type in your own numbers in the form to convert the units!

›› Date difference between calendar days

You may also want to find out how many days are between two dates on the calendar. Use the date calculator to get your age in days or measure the duration of an event.

›› Quick conversion chart of hours to day

1 hours to day = 0.04167 day

10 hours to day = 0.41667 day

20 hours to day = 0.83333 day

30 hours to day = 1.25 day

40 hours to day = 1.66667 day

50 hours to day = 2.08333 day

100 hours to day = 4.16667 day

200 hours to day = 8.33333 day

›› Want other units?

You can do the reverse unit conversion from day to hours, or enter any two units below:

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›› Common time conversions

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›› Definition: Hour

The hour was originally defined in Egypt as 1/24 of a day, based on their duo-decimal numbering system (which counted finger joints on each hand).

›› Definition: Day

A continuous period of 24 hours which, unless the context otherwise requires, runs from midnight to midnight.

›› Metric conversions and more

ConvertUnits.com provides an online conversion calculator for all types of measurement units. You can find metric conversion tables for SI units, as well as English units, currency, and other data. Type in unit symbols, abbreviations, or full names for units of length, area, mass, pressure, and other types. Examples include mm, inch, 100 kg, US fluid ounce, 6'3", 10 stone 4, cubic cm, metres squared, grams, moles, feet per second, and many more!