UnitConDays to Hours Converter
Convert days to hours for project scheduling, shift planning, countdowns, and duration calculations. This is a common conversion when event durations given in days need to be expressed as exact hour counts.
Formula
Multiply days by 24 to get hours. To reverse, divide hours by 24 to get days.
Quick reference
| Day (d) | Hour (h) |
|---|---|
| 0.5 | 12 |
| 1 | 24 |
| 1.5 | 36 |
| 2 | 48 |
| 3 | 72 |
| 5 | 120 |
| 7 | 168 |
| 10 | 240 |
| 14 | 336 |
| 30 | 720 |
About these units
Day
The day (24 hours) has been divided into hours since ancient Egypt. The 24-hour day was adopted through the influence of Egyptian timekeeping on Greek and Roman civilization, ultimately becoming the global standard.
Hour
The hour (60 minutes = 3600 seconds) emerged from the Babylonian sexagesimal system. Mechanical clocks in the 14th century made the hour the primary unit for scheduling and timekeeping.