Hours to Days Calculator
Convert a duration in hours to days.
About the Hours to Days Calculator
A day is defined as exactly 24 hours, making the hours-to-days conversion one of the simplest yet most frequently needed time calculations for scheduling, travel planning and everyday time management.
Formula: Days = Hours ÷ 24
For example, 48 hours converts to exactly 2 days, a 36-hour shift converts to 1.5 days, and 100 hours converts to approximately 4.17 days.
Because a day is a fixed 24-hour period regardless of the calendar month, this conversion is exact — unlike converting hours to weeks or months, which must rely on averaged values.
This conversion is commonly used to translate flight durations, hospital stay lengths, project deadlines, intermittent fasting windows and server uptime figures from a raw hour count into a more intuitive number of days.