Calculate Days Between Two Dates

Pick two dates and get the number of days between them, with weekdays, weeks, and years-months-days.

Dates & TimeWorldwideSource: Gregorian calendar arithmeticFree, no sign-up

Start date

End date

Include the end date (count both the first and the last day)

The result updates as you change the dates. Dates before 1900 or after 2200 are not accepted.

Days from January 1, 2026 to December 31, 2026

364 days

52 weeks and 0 days · 11 months and 30 days

Weekdays (Mon–Fri)	260 days
Weekend days	104 days
Hours	8,736
Start	Thursday, January 1, 2026
End	Thursday, December 31, 2026

What this page cannot tell you

Weekday counts do not remove public holidays, which differ by country, state and employer. Business-day deadlines set by a law or contract follow that rule's own counting method, which this page does not know.

How to calculate the days between two dates

Pick the start date. It starts at today; change it to any date from 1900 to 2200.
Pick the end date. If it is earlier than the start, the two are swapped for you.
Choose whether to count the end date. Tick the box to count both the first and the last day.
Read the result. Days, weeks and days, years-months-days, weekdays and weekend days.

10 reasons to count the days between two dates

Notice periods

An employee working out how many days are left between handing in notice and their last day.

Visa and travel limits

A traveller checking the days spent in a country between arrival and departure stamps.

Rental deposits and returns

A tenant counting the days a landlord has taken since the move-out date.

Project timelines

A project manager seeing how many working days sit between kickoff and a launch date.

Pregnancy and baby milestones

Parents counting the days since a birth or until a due date.

Warranty and return windows

A shopper checking whether a 90-day return window has closed.

Court and filing deadlines

Someone counting calendar days to a filing date, then checking the court's own counting rule.

Anniversaries

A couple counting the days they have been together.

Habit streaks

Someone tracking how many days since they started a new habit.

Invoice ageing

A small business owner seeing how many days an invoice has been unpaid.

How the days are counted

Dates are counted as whole calendar days in the Gregorian calendar, including leap days. By default the count excludes the end date (1 March to 2 March is 1 day); tick the box to include both ends (2 days).

Weekdays are Monday to Friday. The years-months-days figure counts whole months first — a month added to 31 January lands on 28 or 29 February — then the days left.

Limits: weekday counts do not remove public holidays, and a law, contract or court rule may count days differently (excluding the first day, rolling past weekends). Use this page for the arithmetic and that rule for the deadline itself.

Frequently asked questions

How do I calculate the days between two dates?

Subtract the earlier date from the later one in whole days. This page does it for you, leap years included.

Does it include the end date?

Not by default. Tick 'Include the end date' to count both the first and the last day, which adds one.

How many days are in a year?

365, or 366 in a leap year. 2028 is the next leap year.

How are business days counted?

The weekday count is Monday to Friday. Public holidays are not removed, because they differ by country, state and employer.

Can the end date be before the start date?

Yes. The page swaps them and tells you it did.

How far back can I go?

From 1900 to 2200.