Last updated: November 27, 2025
Hours to days conversion explained
Work logs, outages, and travel plans often toggle between hours and days. Because 1 day equals exactly 24 hours, the math is linear. This calculator keeps minutes, seconds, and weeks nearby so you can sanity-check long spans.
How the conversion works
Internally the calculator normalizes to seconds, but the hour-day factor is fixed, so either formula gives the same answer.
Units and conversions
| Unit | Symbol | Relation |
|---|---|---|
| Second | s | base |
| Minute | min | |
| Hour | h | |
| Day | day | |
| Week | wk |
Worked examples
- 48 hours to days
- 3 days to hours
- 240 hours to weeks
Tips and pitfalls
- Keep one decimal place when summarizing partial days (e.g., 36 hours = 1.5 days).
- For SLAs that mention days, confirm whether they mean calendar days or business days; this converter uses calendar days.
- When logging effort, convert back to hours before importing into tools that expect hours.