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Unit Converters

Days to Hours Converter

Convert days (d) to hours (h) instantly. 1 d = 24 h.

Free, no sign-upPrivate — runs in your browserUpdated October 2026
1 d = 24 h

In all time units

Millisecond86,400,000 ms
Second86,400 s
Minute1,440 min
Hour24 h
Day1 d
Week0.1428571429 wk
Month (average)0.03285488408 mo
Year (average)0.002737907007 yr

How to convert days to hours

Multiply the value in days by 24 to get hours.

1 d = 24 h

Example

To convert 10 days to hours: 10 × 24 = 240 h.

d to h conversion chart

Days (d)Hours (h)
0.1 d2.4 h
0.25 d6 h
0.5 d12 h
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

About the units

Day (d)

A day is 24 hours (86,400 seconds).

Hour (h)

An hour is 60 minutes or 3,600 seconds.

Related conversions

Hours to days · Seconds to hours · Minutes to hours · Days to seconds · Days to minutes · Days to weeks · Days to months · Days to years · Weeks to hours · Months to hours · Years to hours · All time units

Frequently asked questions

How many hours are in a day?

There are 24 hours in one day. Multiply any value in days by 24 to convert it to hours.

What is 10 d in h?

10 days equals 240 hours.

How do I convert hours back to days?

Multiply by 0.04166666667, since 1 h = 0.04166666667 d. You can also use our hours to days converter.

What is a day?

A day is 24 hours (86,400 seconds).