About this days between dates
How many days until the deadline, the holiday, the visa expiry? Count the exact days between any two dates — total days, working days only, and weeks — then add or subtract days from a date to plan around them.
How to use it
- Pick a start date and an end date.
- Read the total days, working days and weeks.
- Optionally type a number of days to see the date that far from the start.
The formula
Days = (End − Start) / 86,400,000 ms\nWorking days exclude Saturdays and Sundays
Worked example
From 1 January to 31 January is 30 days, of which 22 are working days in a typical year. 90 days after 1 January lands on 1 April.
Frequently asked questions
Does it count both the first and last day?
It counts the difference: from Monday to Tuesday is 1 day. For inclusive counting (both endpoints), add 1.
Are public holidays excluded from working days?
No — only weekends. Holidays differ by country, so subtract your local ones from the working-day figure.
Can the end date be before the start?
Yes — the count works in either direction; the total is shown as a positive number.