Day to Hour Converter

Type a value — the answer appears instantly. 1 d = 24 h.

Reviewed by the OmniCalc teamMethod verified 2026-07-01

From (days)

To (hours)

Result

24 hours

= 86,400 s= 1,440 min

Formula: h = d × 24

Day to Hour formula

h = d × 24

Convert 5 days to hours

Start with 5 days.
Multiply by the conversion factor: 5 × 24 = 120.
So 5 d = 120 h.

Day to Hour conversion table

Day to Hour conversion table
Days (d)	Hours (h)
0.01 d	0.24 h
0.1 d	2.4 h
0.25 d	6 h
0.5 d	12 h
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
15 d	360 h
20 d	480 h
25 d	600 h
30 d	720 h
40 d	960 h
50 d	1,200 h
75 d	1,800 h
100 d	2,400 h
250 d	6,000 h
500 d	12,000 h
1,000 d	24,000 h
5,000 d	120,000 h
10,000 d	240,000 h

Unit definitions

What is a day?

The day is 86,400 seconds, the conventional length of one Earth rotation used for civil timekeeping. It is the basis for calendars, deadlines, and daily life. Seven days make a week.

What is a hour?

The hour is 3600 seconds, or sixty minutes. It is the standard unit for work shifts, travel time, and daily scheduling. Twenty-four hours make a day.

Frequently asked questions

How many hours are in one day?

One day equals 24 hours (1 d = 24 h).

How do I convert days to hours?

Multiply the value in days by 24. For example, 10 d × 24 = 240 h.

Which is bigger — a day or a hour?

A day is bigger: one day contains 24 hours.

Is this day to hour converter free?

Yes — the converter is free, works offline once loaded, and computes instantly in your browser without sending your numbers to a server.

Conversion factors follow international definitions (SI / NIST). Last verified 2026-07-01.