Day Counter
Count days between dates and calculate day numbers
Total Days
1
Calendar days
Business Days
0
Excluding weekends
Weeks
0.1
0 complete weeks
Months
0.0
0 complete months
Years
0.00
0 complete years
Quick Reference
Days in Months:
- 30 days: Apr, Jun, Sep, Nov
- 31 days: Jan, Mar, May, Jul, Aug, Oct, Dec
- 28/29 days: Feb (29 in leap years)
Common Periods:
- 1 week = 7 days
- 1 fortnight = 14 days
- 1 month ≈ 30.437 days
- 1 year = 365.25 days
How it works
A day counter finds the exact number of days between two dates — useful for deadlines, anniversaries, or how long until an event. It subtracts the earlier date from the later one, handling month lengths and leap years.
Days between dates
Days = end date − start date
- start date
- the earlier date
- end date
- the later date
Worked example
- From June 1 to August 1
- June 30 days + July 31 days
61 days between the dates.
Good to know
- Decide whether to include the end day — 'days until' often excludes today and includes the target.
- Business-day counts skip weekends and holidays, giving a smaller number.
- Spans crossing February 29 pick up an extra day.
Related Calculators
Frequently Asked Questions
Does the day counter include the end date?
It depends on the calculation type. 'Days between' typically excludes the end date, while 'inclusive days' includes both start and end dates.
How are leap years handled?
The calculator automatically accounts for leap years, adding February 29th in years divisible by 4 (except century years not divisible by 400).