How to convert days to hours
Formula: h = d × 24
Worked example: 3 d → 3 × 24 = 72 h
Multiply days by 24. A 3 day trip is 72 hours. For pay or billing, check whether the contract counts calendar hours or working hours.
Days to hours conversion chart
| Days (d) | Hours (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 |
| 12 d | 288 h |
| 15 d | 360 h |
| 20 d | 480 h |
| 24 d | 576 h |
| 30 d | 720 h |
| 36 d | 864 h |
| 45 d | 1,080 h |
| 48 d | 1,152 h |
| 60 d | 1,440 h |
| 72 d | 1,728 h |
| 90 d | 2,160 h |
| 100 d | 2,400 h |
| 120 d | 2,880 h |
What is a day?
The day equals 24 hours or 86,400 seconds. It is the natural unit for deadlines, rentals, notice periods and medication courses. The occasional leap seconds added to official clocks are ignored here.
What is an hour?
The hour equals 60 minutes or 3,600 seconds. Work time, pay rates, parking and travel durations are counted in hours; a full-time US work week is usually 40 hours.