100% free · No sign-up · Runs in your browser
Convert days to hours
Instant, accurate d → h conversion with a live converter, table and formula.
=
1 day = 24 hours
1 hour = 0.0416667 days
days to hours table
| days (d) | hours (h) |
|---|---|
| 0.5 | 12 |
| 1 | 24 |
| 2 | 48 |
| 5 | 120 |
| 10 | 240 |
| 20 | 480 |
| 50 | 1200 |
| 100 | 2400 |
| 500 | 12000 |
| 1000 | 24000 |
Formula
hours = days × 24.
Example
10 days = 240 hours.
What is a day?
A day (d) is 24 hours.
What is a hour?
An hour (h) is 60 minutes, or 3,600 seconds.
Real-world reference points
A workday is 8 hours; a week 168 hours; a year roughly 8,766 hours.
| Reference | days | hours |
|---|---|---|
| Feature film | 0.0833 d | 2 h |
| Workday (8 h) | 0.333 d | 8 h |
| Day | 1 d | 24 h |
| Week | 7 d | 168 h |
| Average month | 30.44 d | 731 h |
Mistakes to avoid with time conversions
- Treating every month as 30 days — the average is ~30.44, and finance often uses exact day counts.
- Calling a year exactly 52 weeks — it's 52 weeks plus 1-2 days, which shifts weekday math.
- Ignoring time zones and DST when converting durations across calendar boundaries.
Frequently asked questions
How many hours in a days?+
1 day = 24 hours.
How do I convert days to hours?+
Enter the value in the days box above and the hours value appears instantly. You can also type in the hours box to convert the other way.
Is this d to h converter free?+
Yes — it is 100% free, needs no sign-up, and runs entirely in your browser.