Does it account for leap years?

Yes. The calculator uses proper date logic including leap years.

Can I get business days (weekdays only)?

Yes. The tool shows business days — weekdays between the two dates, excluding Saturdays and Sundays.

Is the end date included in the count?

Typically the span is between the two dates; you can add one day if you need the end date included.

No. Dates are processed locally only.

Date Difference Calculator

Get the exact duration between two dates in years, months, weeks, and days. Useful for project timelines and countdowns. All calculation runs in your browser.

Free · No limits · Runs in your browser

How to use

1Select the start date.
2Select the end date.
3View the difference (days, weeks, months, years).

Frequently asked questions

Does it account for leap years?: Yes. The calculator uses proper date logic including leap years.
Can I get business days (weekdays only)?: Yes. The tool shows business days — weekdays between the two dates, excluding Saturdays and Sundays.
Is the end date included in the count?: Typically the span is between the two dates; you can add one day if you need the end date included.
Is my input tracked?: No. Dates are processed locally only.