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Day Counter Calculator

Add or subtract days from a date.

Add days to a date

Choose a start date and a number of days to add (or subtract with a negative number). This calculator returns the resulting date and its day of the week — useful for deadlines and planning.

Frequently Asked Questions

What is the Day Counter Calculator?

Add or subtract days from a date. It runs instantly in your browser and is completely free to use.

What do I need to enter to use the Day Counter Calculator?

The Day Counter Calculator asks for the following values (2): Start date, Days to add (− to subtract). Fill them in and the result appears immediately — the calculation runs on your own device, so nothing you type is sent to a server.

How accurate is the Day Counter Calculator?

The Day Counter Calculator uses standard, widely-accepted formulas, so its figures are reliable estimates for everyday planning. They are not a substitute for advice from a qualified professional.

Is the Day Counter Calculator free, and do I need an account?

Yes. The Day Counter Calculator — and every other calculator on Calculatis — is completely free, with no registration, no download and no limit on how often you use it.