Free tool · No sign-up

Date Difference Calculator

Pick a start date and an end date, and this calculator shows the exact number of days between them — plus the span in years, months, and days, the number of weeks, business days (weekdays), and total hours. It runs entirely in your browser: free, instant, and no sign-up.

Start dateEnd date

Include the end date in the count

Pick a start and end date to see the number of days between them.

Frequently asked questions

Enter the start date and end date and the tool subtracts one from the other to give the exact number of days between them. It also breaks the span down into years, months, and days, and shows weeks, business days, and total hours.

Yes — the business-days figure counts only Monday to Friday across the period and skips weekends. It does not know about public holidays, which vary by country, so subtract any holidays yourself if you need a precise working-day total.

It depends on what you're measuring. For a gap or countdown, leave it off — the 1st to the 8th is 7 days. For an inclusive span like a hotel stay or event that runs through the end date, tick 'Include the end date' to add that final day.

Yes — free, no sign-up, and the dates you enter never leave your browser.