Days to hours

hours = days × 24

How to convert days to hours

One day is 24 hours, so multiply the number of days by 24. For example, 20 days is 20 × 24 = 480 hours. To go back, divide by the same number, or multiply by 0.04166667.

Quick estimate

Multiplying by about 20 gets within 16.7% of the exact answer, which is enough to check that a result makes sense.

Where it comes up

Time conversions come up in planning and scheduling, timesheets and pay, project estimates and working out ages or durations.

days	hours
1 d	24 h
2 d	48 h
3 d	72 h
4 d	96 h
5 d	120 h
6 d	144 h
7 d	168 h
8 d	192 h
9 d	216 h
10 d	240 h
11 d	264 h
12 d	288 h
13 d	312 h
14 d	336 h
15 d	360 h
16 d	384 h
17 d	408 h
18 d	432 h
19 d	456 h
20 d	480 h
25 d	600 h
30 d	720 h
40 d	960 h
50 d	1,200 h
60 d	1,440 h
70 d	1,680 h
75 d	1,800 h
80 d	1,920 h
90 d	2,160 h
100 d	2,400 h
120 d	2,880 h
150 d	3,600 h
200 d	4,800 h
250 d	6,000 h
300 d	7,200 h
400 d	9,600 h
500 d	12,000 h
750 d	18,000 h
1,000 d	24,000 h
1,500 d	36,000 h
2,000 d	48,000 h
5,000 d	120,000 h
10,000 d	240,000 h

Questions

How many hours are in a day?

24 hours.

How do I convert days to hours in a spreadsheet?

Put the value in A1 and type =A1*24, then fill the formula down the column.

Are the values in the table exact?

They are calculated from the exact definitions of the units and rounded only for display. Open any row for the full working.