Entrovix AI

Date Difference Calculator

Days between two dates counted the way deadlines actually are — working days, with your weekend pattern and your holiday list, not just calendar days.

Runs in your browser — nothing is uploaded

The two dates

One date per line or comma-separated, as YYYY-MM-DD. Holidays already falling on a weekend are not counted twice.

Working days

22

Weekends and holidays removed

Calendar days

31

Inclusive of both dates

9 of those days don't count

9 weekend days. If the deadline you are working to is quoted in working days, the calendar figure will put you 9 days out.
In years, months and days
0y 0m 30d
Weeks
4.4
Weekend days
9
Holidays excluded
0
Hours
744
Why use it

Built to be genuinely useful

Working days, properly

Exclude weekends and a holiday list. Notice periods and delivery promises are quoted this way.

Six-day weeks supported

Saturday-and-Sunday, Sunday-only, or no weekend at all — because not every workplace runs a five-day week.

Every unit at once

Years, months and days, plus weeks, calendar days and hours from the same pair of dates.

Nothing is uploaded

Everything runs in your browser, so your figures never reach a server.

How it works

Three steps

  1. 1

    Pick the two dates.

  2. 2

    Choose which days are non-working where you are.

  3. 3

    Paste any public holidays that fall in the range.

Calendar days and working days are different deadlines

Notice periods, refund windows, court timelines, delivery promises and service-level agreements are overwhelmingly quoted in working days. Calendars count calendar days. The gap over a month is around nine days, and over a quarter closer to thirty — which is the difference between meeting a deadline and missing one.

Every date-difference calculator online gives you calendar days. This one gives both, and lets you say what a working day means where you are: a five-day week, a six-day week, or a shift pattern with no weekend at all.

Holidays already falling on a weekend are not deducted twice, which sounds obvious and is a common bug in tools that do attempt holiday handling.

Why the months figure is not days divided by thirty

The years-months-days breakdown counts whole calendar months forward from the start date, then the leftover days. That is what a person means by 'three months and four days', and it is not what dividing the day count by 30.44 produces.

The distinction matters around month ends. From 31 January to 1 March is one month and one day. Approaches that subtract date fields and borrow days produce 'one month and minus one day' here, because February cannot lend enough days to cover January. Counting forward cannot produce that.

Both dates are counted

The calendar-day figure here is inclusive of both the start and end dates, which is the convention used in most legal and contractual counting: 'within 30 days' includes the day you started.

If your deadline is defined as exclusive of the start date, subtract one. Contracts do vary, and the safest reading of an ambiguous clause is usually the earlier date.

FAQ

Questions people ask

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