Date Difference Calculator

How many days until a deadline, how old is a contract, how many working days are in a project? Enter two dates for an exact calendar difference, or add a number of days to a date. Public holidays are not included because they differ by country.

0Days
0Weeks
0Years, months, days
0Working days

Add or subtract days

Runs entirely in your browser. Your input and files are not uploaded to any server.

How to use

  1. Choose a start and an end date.
  2. Decide whether to count the end date and which days are the weekend.
  3. Or use the second panel to add or subtract days from a date.

Examples

Notice period

1 March to 31 May → 91 days, or 92 if both dates count.

Working days in Morocco

Weekend set to Saturday–Sunday counts Monday to Friday only.

Privacy

Runs entirely in your browser. Your input and files are not uploaded to any server. See the privacy policy for what is stored in your browser (favorites and history only). Privacy policy

Check it yourself: open your browser’s developer tools, select the Network tab and use the tool. Your file never appears in an upload request. Once this page is saved for offline use, you can also disconnect from the internet and keep working. Ads and anonymous visit statistics, when enabled, make their own requests, but they never receive your files or text.

Frequently asked questions

How are months counted?

By calendar: from 31 January, one month later is the last day of February. The result shows years, months and days.

Are public holidays excluded?

No. Holidays vary by country and year, so subtract them yourself from the working-day count.

Time Zone ConverterConvert a date and time from one time zone to several others, with daylight saving time handled by your browser’s time-zone database.
Unix Timestamp ConverterConvert Unix timestamps in seconds, milliseconds or microseconds to readable dates in UTC and your time zone, and convert dates back to epoch time.
Unit ConverterConvert between metric and imperial units for length, mass, temperature, area, volume, speed, time, pressure and energy, with a table of every unit at once.
Invoice GeneratorMake a professional invoice in your browser: logo, line items, tax or VAT, discount, shipping, deposit.
Percentage CalculatorWork out a percentage of a number, what percent one number is of another, percentage change, and adding or subtracting a percentage — all on one page.
Discount CalculatorCalculate the sale price after a discount, an optional second (stacked) discount and sales tax or VAT, plus how much you save in total.

Search tools