Add Working Days to a Date
Pick a start date and a number of working days. The calculator skips weekends and UK bank holidays and tells you where you land.
Use a negative number to count backwards.
Enter a date and a number of working days.
How “add working days” is calculated
Adding N working days means counting forward N weekdays from the start date, skipping Saturday, Sunday, and any UK bank holiday applicable to the selected region. The start date itself is not counted, so adding one to a Friday produces the following Monday.
Easter and Christmas are the two big clusters that push results further out than you might expect. Spring and August bank holidays also matter — three of the eight English bank holidays sit on Mondays, so a short add can absorb two non-working days back to back.
Negative numbers count backwards. Subtracting one working day from a Monday gives the previous Friday (assuming neither is a bank holiday).
Frequently asked questions
How is "add 5 working days" interpreted?+
The result is the date that is 5 working days after the start date, skipping weekends and bank holidays. The start date itself is not counted — so adding 5 to a Monday lands on the following Monday (assuming no bank holidays in between).
Can I subtract working days?+
Yes. Enter a negative number in the working days field to count backwards from the start date.
Why is my result different from another calculator?+
The two most common reasons: (1) different region — Scotland and Northern Ireland have extra bank holidays; (2) different definition of "working days" — some calculators include Saturdays. Check both settings.