Days between dates calculator
Enter a number of days and see it expressed every other way, including working days.
Working days
62.3
- Weeks
- 12.857
- Months
- 2.957
- Years
- 0.2464
- Hours
- 2160
- Working hours
- 467.1
- Non-working days
- 25.7
- Seconds
- 7 776 000
Show the working
- Number of days = 90
- Working days per week = 5
- Public holidays in the period = 2
- Working hours per day = 7.5
- Weeks = 90 / 7 = 12.8571
- Months = 90 / 30.436875 = 2.956 94
- Years = 90 / 365.2425 = 0.246 412
- Hours = 90 * 24 = 2160
- Working days = max(90 * 5 / 7 - 2, 0) = 62.2857
- Working hours = 62.2857 * 7.5 = 467.143
- Seconds = 90 * 86400 = 7 776 000
- Non-working days = 90 * (7 - 5) / 7 = 25.7143
Values are shown to six significant figures here; the arithmetic itself runs on exact fractions and is only rounded where a number is printed.
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The formula
- working days = days x working days per week / 7 - holidays
The average Gregorian month is 30.436875 days, which is 365.2425 divided by twelve.