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Days to Hours Converter

Convert Days to Hours instantly: 1 day = 24 hours. Free days to hours converter with formula, chart and examples. No sign-up needed.

1 day = 24 hours

All conversions

UnitSymbolValue

Quick answer

To convert days to hours, multiply the number of days by 24. For example, 2 days = 48 hours.

Last updated · Conversion factors follow the SI definitions in the BIPM SI Brochure and NIST SP 811.

How to Convert Days to Hours

The formula is hours = days × 24. 1 day = 24 hours. Type any value in the converter above for an instant answer, or use the chart below for the most common values.

This page is preset for day to hour conversions, but you can switch either list to any of the 33 units in the Time Converter.

Days to Hours conversion chart

DaysHours
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
11 d264 h
12 d288 h
13 d312 h
14 d336 h
15 d360 h
16 d384 h
17 d408 h
18 d432 h
19 d456 h
20 d480 h
25 d600 h
30 d720 h
40 d960 h
50 d1,200 h
60 d1,440 h
70 d1,680 h
75 d1,800 h
80 d1,920 h
90 d2,160 h
100 d2,400 h
150 d3,600 h
200 d4,800 h
250 d6,000 h
500 d12,000 h
1,000 d24,000 h

Common Days to Hours conversions

  • 1 day = 24 hours
  • 1 d = 24 h
  • 2 d = 48 h
  • 3 d = 72 h
  • 7 d = 168 h
  • 30 d = 720 h

Popular time converters

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How to Use the Days to Hours Converter

  1. Type a value in the From box and choose its unit.
  2. Pick the unit you want in the To list — the result updates as you type.
  3. Use the swap button to reverse the conversion, or type in the To box to convert backwards.
  4. Check the All conversions table to see your value in every unit; click a row to make it the target.

Frequently Asked Questions

How many hours are in a day?

There are 24 hours in 1 day. Going the other way, 1 hour = 0.04166666667 days.

How do I convert Days to Hours?

Use the formula hours = days × 24. For example, 1 day = 24 hours. Or type the value in the converter above and the answer appears as you type.

What is the Days to Hours formula?

hours = days × 24 — the conversion factor is exact, using the international definitions of both units.

What is 1 day in hours?

1 day = 24 hours.

What is 2 days in hours?

2 days = 48 hours.

What is 3 days in hours?

3 days = 72 hours.

What is 7 days in hours?

7 days = 168 hours.

What is 30 days in hours?

30 days = 720 hours.

Is this Days to Hours converter accurate?

Yes. It uses exact unit definitions and double-precision maths, and you can show up to 15 significant digits. The table below is calculated with the same formula.

Can I convert Days to other time units?

Yes — pick any unit in the From and To lists above, or open the full Time Converter, which handles 33 time units.

Is the Days to Hours converter free?

Yes, it is free with no sign-up, and every conversion runs in your browser so nothing is sent to a server.