Date Difference Calculator
Count the days, weeks, months and working days between two dates.
Working days exclude weekends but not public holidays, which vary by region.
Measuring the gap between two dates
The calculator finds the number of days from the earlier date to the later one, then restates that span as weeks, an approximate number of months, and an exact years-months-days breakdown. It also counts how many of those days fall on a weekday.
By default it counts nights — the days that pass between the two dates — so a Friday-to-Saturday span is one day. If you are counting something like nights booked or days of leave where both ends count, switch on "include the end day".
From 1 January 2026 to 6 June 2026 is 156 days — about 22 weeks and 2 days, or roughly 5.1 months — of which 111 fall on weekdays (Monday to Friday).
Where it comes in handy
Counting days by hand is where mistakes creep in — a forgotten leap day, a miscounted month, an off-by-one at the start or end. Letting the dates do the talking removes that, whether you are planning a project deadline, tracking a notice period, or counting down to a holiday.
A few pointers
- Inclusive vs exclusive. Hotel nights are exclusive of the checkout day; leave that totals "days off" is usually inclusive — pick the toggle to match.
- Holidays aren't deducted. The working-days figure counts weekdays only; subtract any public holidays in your country.
- Order doesn't matter. Past or future, the gap is the same either way.