Home / Everyday maths / Days between dates
Date calculator
Work out how long there is between two dates, including how many of those days are working days.
Your details
Enter two dates, or add days to one.
Used for days between two dates.
Used when adding days. A negative number counts backwards.
Others in Everyday maths
Figures checked
This calculator is arithmetic only and uses no statutory figures. This is general information, not professional advice.
Counting days
There is more than one convention. This calculator counts the whole days between the two dates, so from Monday to Wednesday is two days. Some contracts and court rules count inclusively, which would make that three, and some exclude the first day but include the last. Where a deadline matters, check which convention applies.
Working days
Working days here means Monday to Friday, with no allowance for bank holidays, which differ between England and Wales, Scotland and Northern Ireland. Where a period is defined in working days by a contract or by a court, the definition in that document governs.