Days Between Two Dates Calculator

Find how many days are between two dates. Enter a start date and an end date and this calculator shows the days between dates in days, weeks and months — and in business days too, if you tick that box. It is a free days between two dates calculator, with no sign-up.

Start date End date

Include the end date
Count business days only (exclude Saturday and Sunday)

How many days between two dates?

That is the question this page answers. Pick the two dates and the tool counts the days in between. By default it counts the start date and leaves out the end date, which is how most date calculators work: 1 January to 2 January is 1 day, not 2. If you want both dates counted, tick "Include the end date" and the answer goes up by one.

How to use the between dates calculator

1. Enter the start date. 2. Enter the end date, or leave it as today. 3. Tick "Include the end date" only if you want the last day counted. 4. Tick "Count business days only" if you want weekends left out. 5. Tap Calculate Days Between Dates.

Days, weeks and months between dates

The result is shown in three ways, because different people need a different answer. Days is the exact count. Weeks and days is useful for planning — 313 days is 44 weeks and 5 days. Years, months and days is the calendar answer — the same period is 10 months and 9 days. Business days is the working answer, Monday to Friday only.

Example results

From 1 January 2026 to 10 November 2026 there are 313 days, or 44 weeks and 5 days, or 10 months and 9 days. From 25 December 2025 to 1 January 2026 there are 7 days. From 1 January 2026 to 31 December 2026 there are 364 days. For business days, Monday 2 November 2026 to Friday 6 November 2026 is 4 business days without the end date, and 5 business days if you include Friday. Monday 2 November to Monday 9 November 2026 is 7 calendar days but only 5 business days, because Saturday and Sunday are left out. You can check any two dates the same way by changing the dates in the tool.

How business days are counted

A business day is Monday to Friday. Saturday and Sunday are not counted. Public holidays are not removed, because holidays are different in every country and state, so check your own holiday calendar if a holiday falls inside your dates. If the end date is a Saturday or Sunday and you tick "Include the end date", it is still not counted as a business day, because it is a weekend day.

Leap years and month lengths

The calculator handles leap years and different month lengths correctly. February 2024 had 29 days, so 29 February 2024 to 28 February 2025 is 365 days, not 364. A month is not always 30 days, so the months figure is a calendar count, not days divided by 30 — 1 March to 31 March 2026 is 30 days, which is 1 month, while 1 January to 1 February is 31 days, which is also 1 month.

When to use this calculator

Use it to count days until a deadline, a holiday, a birthday or a wedding; to work out how long a project lasted; to count working days for a job or a school term; to check the gap between two events; or to plan a trip. It is also useful for counting days since an event, by putting the event date first and today second.

Frequently asked questions

How do I calculate days between two dates? Enter both dates in the tool above. It counts the days in between, and also shows weeks, months and business days.
Is the end date included? No, not by default. 1 January to 2 January is 1 day. Tick "Include the end date" to count the last day as well.
How many days are between two dates? It depends on the dates. Use the calculator above — for example, 1 January 2026 to 10 November 2026 is 313 days.
What is a business day? A working day, Monday to Friday. Weekends are not business days. Tick the business-days box to count only those days.
Does it count weekends? Yes, in the main days count. Weekends are only left out when you tick "Count business days only".
Can I count weeks or months between dates? Yes. The result shows weeks and days, and years, months and days, on the same page.
Is my data saved? No. The calculation runs in your browser only, and the dates are not sent to any server.