Days to Hours Converter

Enter the time in days below to get the value converted to hours.

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Result in Hours:

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85 d = 2,040 hr

Do you want to convert hours to days?


How to Convert Days to Hours

To convert a measurement in days to a measurement in hours, multiply the time by the following conversion ratio: 24 hours/day.

Since one day is equal to 24 hours, you can use this simple formula to convert:

hours = days × 24

The time in hours is equal to the time in days multiplied by 24.

For example, here's how to convert 5 days to hours using the formula above.
hours = (5 d × 24) = 120 hr

How Many Hours Are in a Day?

There are 24 hours in a day, which is why we use this value in the formula above.

1 d = 24 hr

Days and hours are both units used to measure time. Keep reading to learn more about each unit of measure.

What Is a Day?

One day is the time it takes for the Earth to complete a single 360-degree rotation about its axis. There are 24 hours in a day.

The day is an SI accepted unit for time for use with the metric system. Days can be abbreviated as d; for example, 1 day can be written as 1 d.

Learn more about days.

What Is an Hour?

The hour is a period of time equal to 1/24 of a day or 60 minutes.

The hour is an SI accepted unit for time for use with the metric system. Hours can be abbreviated as hr (plural hrs); for example, 1 hour can be written as 1 hr, and 2 hours can be written as 2 hrs.

Learn more about hours.

Day to Hour Conversion Table

Table showing various day measurements converted to hours.
Days Hours
1 d 24 hr
2 d 48 hr
3 d 72 hr
4 d 96 hr
5 d 120 hr
6 d 144 hr
7 d 168 hr
8 d 192 hr
9 d 216 hr
10 d 240 hr
11 d 264 hr
12 d 288 hr
13 d 312 hr
14 d 336 hr
15 d 360 hr
16 d 384 hr
17 d 408 hr
18 d 432 hr
19 d 456 hr
20 d 480 hr
21 d 504 hr
22 d 528 hr
23 d 552 hr
24 d 576 hr
25 d 600 hr
26 d 624 hr
27 d 648 hr
28 d 672 hr
29 d 696 hr
30 d 720 hr
31 d 744 hr
32 d 768 hr
33 d 792 hr
34 d 816 hr
35 d 840 hr
36 d 864 hr
37 d 888 hr
38 d 912 hr
39 d 936 hr
40 d 960 hr

More Day & Hour Conversions