Conversion formula

The conversion factor from hours to days is 0.041666666666667, which means that 1 hour is equal to 0.041666666666667 days:

1 hr = 0.041666666666667 d

To convert 15.5 hours into days we have to multiply 15.5 by the conversion factor in order to get the time amount from hours to days. We can also form a simple proportion to calculate the result:

1 hr → 0.041666666666667 d

15.5 hr → T_(d)

Solve the above proportion to obtain the time T in days:

T_(d) = 15.5 hr × 0.041666666666667 d

T_(d) = 0.64583333333333 d

The final result is:

15.5 hr → 0.64583333333333 d

We conclude that 15.5 hours is equivalent to 0.64583333333333 days:

15.5 hours = 0.64583333333333 days

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 day is equal to 1.5483870967742 × 15.5 hours.

Another way is saying that 15.5 hours is equal to 1 ÷ 1.5483870967742 days.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that fifteen point five hours is approximately zero point six four six days:

15.5 hr ≅ 0.646 d

An alternative is also that one day is approximately one point five four eight times fifteen point five hours.

Conversion table

hours to days chart

For quick reference purposes, below is the conversion table you can use to convert from hours to days