Date & Time
Date to Date Calculator
Calculate the exact number of days, working days, weeks, and months between any two dates — or add and subtract days from a date.
Date Range
Days Between Dates
30 days
0y 0m 30d
Total Weeks
4 wks
+2 days
Total Months
0
Working Days
20
Mon – Fri
Weekends
10
Sat + Sun
Days between two dates
The date difference calculator counts the total number of calendar days between a start date and end date, inclusive of neither endpoint by default — the same convention used by most date calculation tools and spreadsheet software. It also breaks down the difference into years, months, and remaining days.
Working days vs. calendar days
Working days (also called business days) count only Monday through Friday, excluding weekends. This is essential for project planning, legal deadlines, and contract timelines. The calculator does not account for public holidays — add or subtract holidays manually for precise business day counts.
Add or subtract days from a date
The "Add / Subtract Days" mode lets you find the date that is exactly N days from any starting date. Enter a positive number to move forward in time, or a negative number to go back. This is useful for calculating deadlines, warranty expiry dates, payment due dates, and planning future events.
Common date calculations
- Days until a holiday or event
- Days since a past event (anniversary, start of a project)
- 90-day notice periods
- Contract deadlines and payment terms
- How many weekdays remain in the month or quarter