The end date
Days between counts from the start date up to the end date, without the end date itself: Monday to Friday is 4 days. Include the end date when both days count — that same Monday to Friday is then 5.
Free date calculator
Count the days
between dates.
How many days between two dates, how many until a date — or since one — and what date you land on after adding days, weeks, months or years. Everything is calculated in your browser.
How many days between two dates?
Count the calendar days from one date to another, with weeks, months and weekdays alongside.
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Choose a date to see the result.
How many days until — or since — a date?
Count down to something ahead, or count up from something behind you. Measured from today.
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Choose a date to see the result.
What date is it after adding days?
Add or subtract days, weeks, months or years from any date to find where you land.
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Choose a date to see the result.
How the count works.
The small rules behind every answer, so you know what you’re looking at.
Weekdays
Weekdays are Monday to Friday, counted over the same span as the days. Public holidays are left in, because which days are holidays depends on where — and for whom — you work.
Months and years
Adding a month keeps the day of the month when it exists. When it doesn’t, you get the month’s last day: January 31 plus one month is February 28, or 29 in a leap year.
Time zones
Every count uses calendar dates, never hours, so daylight saving can’t add or lose a day. “Today” is the date on your device, wherever you are.
Questions, answered.
About counting days, and about this calculator.
How do I calculate the number of days between two dates?
Enter a start date and an end date, and the calculator counts the calendar days from one to the other. By default the end date itself is not counted, so January 1 to January 2 is 1 day; tick “Include the end date” to count both days, which makes it 2.
Should I include the end date?
Include it when the first and the last day both count — a trip or an event from Monday to Friday is 5 days. Leave it out when you are measuring time that has passed, such as how long ago something happened or how many days remain until a deadline.
How many weekdays are between two dates?
The days-between result also shows weekdays, counting Monday to Friday only. Public holidays are not removed, because they differ by country, state and employer — subtract the ones that apply to you.
What happens when you add a month to January 31?
You get the last day of February — February 28, or February 29 in a leap year. Adding months or years keeps the same day of the month when it exists and otherwise uses the month’s last day. Adding days or weeks always counts exactly.
Do time zones or daylight saving affect the count?
No. The calculator works with calendar dates, not hours, so a daylight-saving change can never add or remove a day. “Today” is the date on your own device.
Is this date calculator private?
Yes. Every calculation happens in your browser. The dates you enter are not sent to Shojum, not saved, and not added to the page address, and the page uses no cookies or analytics.
Is there an app?
Yes. Mikan Days is a free date calculator for iPhone that does the same counting, saves your calculations and milestones, and shows them in Home Screen widgets. Everything stays on your device.
Mikan Days for iPhone
Keep the dates that matter.
The same calculator on your iPhone — with your calculations and milestones saved, and your year on the Home Screen. Free on the App Store. Private by default.
