Convert Days to Hours

1 d = 24 h. Enter any value below.

Converted to every unit

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Days to Hours formula

h = d × 24

A day is 24 hours. An hour is 60 minutes, or 3,600 seconds.

Worked example

To convert 5 d, multiply by 24: 5 d × 24 = 120 h.

Days to Hours conversion table

DaysHours
1 d24 h
2 d48 h
3 d72 h
4 d96 h
5 d120 h
6 d144 h
7 d168 h
8 d192 h
9 d216 h
10 d240 h
12 d288 h
15 d360 h
20 d480 h
25 d600 h
30 d720 h
40 d960 h
50 d1,200 h
75 d1,800 h
100 d2,400 h
250 d6,000 h
500 d12,000 h
1,000 d24,000 h

Frequently asked questions

How many hours are in a day?

1 d equals 24 h.

How do I convert days to hours?

Use the formula h = d × 24. For example, 5 d = 120 h.

Last reviewed: October 2026 · Uses exact, internationally defined conversion factors.