Days Between Two Dates Calculator
Count working days, weekends, calendar days, and bank holidays between any two UK dates.
Pick two dates.
What this calculator counts
Pick a start date and an end date and the tool returns four numbers: total calendar days in the range, working days (Mon–Fri excluding bank holidays), weekend days, and bank holidays that fall on a weekday. It also lists each named bank holiday in the range.
By default both end dates are included in the count — the natural reading of “working days from Monday to Friday” is five. Switch off the inclusive toggle for an exclusive count, useful when measuring the gap between dates rather than the span containing them.
Like all calculators on this site, dates are evaluated in UTC so daylight-saving transitions never shift a result by one day. Regional bank holiday data comes from the official gov.uk feed.
When to use this
- Calculating notice period or probation end dates given two known anchors.
- Checking how many working days remain to a court or filing deadline.
- Tracking lead time on procurement and supply contracts that count in working days.
- Project planning — how many productive days really sit between two milestones after weekends and bank holidays are stripped out.
Frequently asked questions
Does the result include the start and end dates?+
Yes by default. Toggle the "include both start and end dates" checkbox if you need to count the gap between them rather than the span containing them.
What if the end date is before the start date?+
The calculator counts the absolute number of working days between the two — the order you enter them in does not change the count.
How accurate are the bank holiday dates?+
Bank holiday data comes from the official gov.uk feed and includes substitute days (when a holiday falls at a weekend). It currently covers 2019 to 2028.