Days, weeks and working days
Pick a start and end date to see the difference in days, in years, months and days, in weeks, and as a count of weekdays (Monday–Friday) and weekend days. Tick Include the end date when you need to count both days — for leave applications, event durations or hotel stays.
Switch to Add or subtract from a date to find a deadline, for example 90 days from today or 6 months before a due date. Month maths keeps the same day of the month, falling back to the last day when needed.
How to count days between dates
- 1
Choose the mode
Days between two dates, or add/subtract.
- 2
Pick the dates
Or a date plus an amount of time.
- 3
Include the end date if needed
Counts both the first and last day.
- 4
Read the result
Days, weeks, weekdays and more.
Key features
Weekday count
Monday to Friday between two dates.
Inclusive option
Count the end date as a full day.
Add or subtract
Days, weeks, months or years.
Accurate calendar maths
No daylight-saving or time-zone errors.
Common uses
- Deadlines: Find the date 30, 60 or 90 days away.
- Leave and payroll: Count working days in a period.
- Planning: Days until an exam, trip or wedding.
Tips and good to know
- Public holidays aren't removed from the weekday count, because they differ by country, state and employer.
- For time within a day, use the Time Duration Calculator.