Date calculator: days between dates and countdowns
Days between two dates, add or subtract days, and live countdowns.
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How to use the date calculator
- 1
Choose what you need: the difference between two dates, adding or subtracting time, or a countdown.
- 2
Pick your dates or amount. Results update immediately.
- 3
For countdowns, give the event a name and share the link so others see the same timer.
Frequently asked questions
Does the day count include the end date?
Not by default: from Monday to Friday is 4 days. Tick “Include the end date” to count both days (5).
What counts as a business day?
Monday to Friday. Public holidays differ by country and aren't excluded.
What happens when I add a month to 31 January?
You get the last day of February, because February has no 31st.
Date calculator: popular pages
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