Days between dates
Count days and business days between dates, or add days to find a deadline.
How to use it
- Count days: pick a start and an end date. Tick Include the end date if both days count, for example for a hotel booking or a leave request.
- Read the total days, the same span in weeks and months, and how many of those are business days (Monday to Friday).
- Find a date: add or subtract days, weeks, months, years or business days from any date, for example 30 days from an invoice date.
Questions
Does it count the start date and the end date?
By default it counts the days from the start date up to the end date, like the number of nights in a stay. Tick Include the end date to count both days, like the number of days on a holiday.
What counts as a business day?
Monday to Friday. Public holidays aren't removed, because they differ by country and region, so subtract any that fall in your range.
What happens when I add a month to 31 January?
You get the last day of February (28 February, or 29 in a leap year), because February has no 31st. Most banks and contracts handle month-end dates the same way.
Do time zones or daylight saving change the count?
No. The calculator works with calendar dates only, so a clock change never adds or removes a day.