Days to Hours Converter
Convert days to hours instantly. 1 d = 24 h. Free two-way converter with the formula and a quick reference table.
How to convert days to hours
hours = days × 24
One day equals 24 hours, so to convert days to hours you multiply by 24. Going the other way, one hour is 0.041667 days. Both units measure time, so the conversion is an exact ratio that never changes.
10 days = 240 hours. Multiply your day figure by the factor above (or just type it into the box) to convert any amount.
Need the other direction? hours to days
days to hours table
| days (d) | hours (h) |
|---|---|
| 1 | 24 |
| 2 | 48 |
| 3 | 72 |
| 5 | 120 |
| 10 | 240 |
| 20 | 480 |
| 25 | 600 |
| 50 | 1,200 |
| 100 | 2,400 |
| 250 | 6,000 |
| 500 | 12,000 |
| 1,000 | 24,000 |
Frequently asked questions
How many hours are in a day?
One day equals 24 hours. So to convert, multiply the number of days by 24.
How do I convert days to hours?
Multiply by 24, or simply enter the value in the converter above — it does the math instantly and works both ways.
Is this conversion exact?
Yes — both units measure the same quantity, so the ratio is fixed and this uses the standard internationally-agreed factor.