Are weekends included?

The basic day difference counts all calendar days. Business-day-only modes can be added later if needed.

Does the end date count as a full day?

Difference is based on calendar dates. Inclusive vs exclusive counting is labeled in the result so expectations stay clear.

Calculations use the dates you enter as calendar days, avoiding clock-time ambiguity for day counts.

Calculator Tools

Date Calculator

Calculate the number of days between two dates, or add/subtract days from a start date. Free date difference tool.

Private when possible
No account required

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About this tool

Date Calculator answers “how many days between…?” and related calendar questions: project deadlines, trip lengths and countdown planning without spreadsheet formulas.

How to use

Enter a start date and an end date.
View the difference in days (and longer breakdowns when shown).
Or enter a start date plus a day offset to find a new date.
Adjust dates to model different schedules.

Features

Days between two dates
Add or subtract days from a date
Clear calendar-based results
Runs locally in the browser

Common use cases

Project and sprint planning
Travel duration estimates
Contract and notice period counts

Supported formats

Date input

Privacy

This tool processes data in your browser. Your content is not uploaded to our servers.

Frequently asked questions

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