Convert Day to Hour
Convert Day to Hour instantly. 1 d = 24 h. Formula, worked examples and a quick reference table.
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h
One day equals 24 hours. To convert any number of days to hours, multiply by 24.
The converter above works in both directions and updates as you type. Below you will find the formula, a worked example and a reference table of common values.
Day to Hour formula
hour = day × 24
To go the other way, use day = hour ÷ 24.
Day to Hour conversion table
| Day | Hour |
|---|---|
| 1 d | 24 h |
| 2 d | 48 h |
| 3 d | 72 h |
| 5 d | 120 h |
| 10 d | 240 h |
| 20 d | 480 h |
| 25 d | 600 h |
| 50 d | 1,200 h |
| 100 d | 2,400 h |
| 250 d | 6,000 h |
| 500 d | 12,000 h |
| 1,000 d | 24,000 h |
Frequently asked questions
How many hours are in a day? +
There are 24 hours in one day.
What is 10 d in h? +
10 d equals 240 h. Multiply 10 by 24.
How do I convert hour back to day? +
Use day = hour ÷ 24. The converter above handles both directions, or see our dedicated Hour to Day page.