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Date Difference Calculator

Count the days, weeks, months and years between two dates.

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Turn this on when both the first and last day count — annual leave, a booking, a notice period.

Calendar breakdown

—

—Total days
—Total weeks
—Total months
—Working days
Weeks and days—
Weekend days—
Hours—
Minutes—
Start weekday—
End weekday—

Working days count Monday to Friday. Public holidays vary by country and are not deducted.

Quick Tool Overview

The Date Difference Calculator gives the gap between two dates several ways at once: as a total number of days, as weeks and days, and as a calendar breakdown in years, months and days. Both readings are given because they answer different questions.

What it does
Counts the time between two dates in every useful unit
You give it
Two dates and whether to include the end date
You get back
Total days, weeks and days, a calendar breakdown and working days
Best for
Deadlines, contract terms, anniversaries and leave requests
Calculators Free, unlimited use No sign-up Runs in your browser

About the Date Difference Calculator

Enter two dates and get the gap between them expressed several ways at once: as a total number of days, as weeks and days, and as a calendar breakdown in years, months and days.

Both readings are given because they answer different questions. A project deadline wants the total day count; an anniversary or a contract term wants the calendar breakdown. A working-day total sits alongside them, counting only Monday to Friday, which is what delivery windows and notice periods usually mean. There is also an option to include the end date, since a hotel stay and a leave request count the same two dates differently.

Key features of the Date Difference Calculator

Total days and calendar breakdown

A project deadline wants the day count; an anniversary or a contract term wants years, months and days.

Working days counted

Monday to Friday only, which is what delivery windows and notice periods usually mean.

Include the end date option

A hotel stay and a leave request count the same two dates differently, so the choice is yours.

Weeks and days

A third reading for the cases planned in weeks rather than days or months.

Any dates, past or future

Historical gaps and future countdowns both work, across leap years.

How to use the Date Difference Calculator

  1. 1

    Pick your two dates

    Set the start and end dates. The order does not matter — the calculator uses the gap between them.

  2. 2

    Choose whether to include the end date

    Turn this on when both the first and last day count, such as a booking or a leave request.

  3. 3

    Read the breakdowns

    Total days, weeks and days, the calendar breakdown and the working-day count are all shown together.

Frequently asked questions

It depends on the context. A four-night hotel stay spans five dates but four nights, whereas five days of annual leave includes both the first and last day. The toggle lets you match whichever convention applies.

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