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Date Difference Calculator

Counts the days, weeks, months and years between two dates, with an option to count only working days.

Calculators Nothing uploaded No sign-up Free, unlimited
Calculators tool
Enter your figures and press Calculate.
In short Date Difference Calculator is a free online tool on inputtesthub.com that counts the days, weeks, months and years between two dates, with an option to count only working days. It needs no account, no download and no payment, and there is no daily usage limit. Everything is processed inside your own browser, so the data you paste is never uploaded to a server.

How to use the Date Difference Calculator

  1. Enter your figures in the input fields.
  2. The result updates as you type, together with the full working.
  3. Check the breakdown table to see exactly how the number was reached.

About the Date Difference Calculator

The Date Difference Calculator counts the days, weeks, months and years between two dates, with an option to count only working days. It runs as plain JavaScript inside the page, which means there is no upload step, no queue and no size limit imposed by a server — the only limit is your own device.

What people use it for

  • Counting days until a deadline.
  • Working out a notice period or contract length.
  • Calculating billable working days for an invoice.

Explained in our guides

All guides

Frequently asked questions

Is there a limit on how often I can use the Date Difference Calculator?
Free, unlimited, and no email address required. You can use it a hundred times a day and nothing changes.
Does anything I enter leave my computer?
No. The Date Difference Calculator runs entirely in your browser using JavaScript. Because the work happens locally, the page also keeps working if your connection drops, and closing the tab is all it takes to discard everything.
What is the Date Difference Calculator used for?
The jobs it is built for: counting days until a deadline. Working out a notice period or contract length. Calculating billable working days for an invoice. It is built for exactly those cases rather than being a general-purpose tool with this bolted on.
Is the number rounded?
The calculation runs in double precision and the result is shown to ten significant figures, so converting a value and converting it back returns the original. What is displayed is rounded for readability; what is copied is not.

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