Working Days Calculator
Count working days between two dates, excluding weekends.
What is the Working Days Calculator?
A working days calculator counts how many weekdays (Monday to Friday) fall between two dates, excluding Saturdays and Sundays — useful for estimating delivery times, project deadlines or notice periods. It works by stepping through every calendar day between the start and end date, checking each day of the week, and counting only those that aren't a Saturday or Sunday. To calculate it manually: count the total number of days between the two dates, then subtract 2 for every complete week in that range (since each 7-day week contains exactly 2 weekend days) — this tool doesn't automatically exclude bank holidays, so subtract those separately if they fall within your date range and matter for your calculation.
How it works
This counts every day between your start and end date, checking each one's day of the week, and excludes Saturdays and Sundays from the working day total — a straightforward but easy-to-get-wrong-by-hand calculation, especially over date ranges spanning several weeks or months.
UK context
This calculation is useful for estimating project timelines, delivery windows, or contractual deadlines expressed in "working days" — though it's worth being clear that "working days" in a UK business context often specifically excludes bank holidays as well as weekends, which this tool doesn't automatically account for since bank holiday dates vary by nation (England/Wales, Scotland, Northern Ireland all differ slightly) and year.
Tips
- If your specific context needs bank holidays excluded too, check the relevant UK nation's bank holiday list for your date range and subtract those days manually from the result.
- Be clear about whether your task needs an inclusive count (both start and end date counted) — this calculator counts both endpoints as part of the range.
Frequently asked questions
Does this exclude UK bank holidays?
No — it excludes Saturdays and Sundays only. Bank holidays vary by UK nation (England/Wales, Scotland and Northern Ireland have some different dates) and by year, so they need to be subtracted separately for your specific situation.
What counts as a 'working day' in a UK business context?
This commonly means Monday to Friday, excluding weekends and bank holidays — though the exact definition can vary by contract or context, so it's worth checking what's specifically meant in any deadline or SLA you're working to.
A quick note
Excludes Saturdays and Sundays only. Doesn't automatically exclude bank holidays — subtract those separately for your specific nation and date range.