Date Difference Calculator
Calculate the exact duration between two dates in years, months and days — plus total days, weeks and working days.
Duration
Total days
Total weeks
Business days
How to use
- Choose the start date.
- Choose the end date.
- Read the full breakdown of the duration.
Frequently asked questions
Are business days included?
Yes. Alongside calendar days, the calculator counts Monday–Friday days between the dates. Weekends are excluded; public holidays are not, as they differ by country.
Does the end date count?
The result is the difference between the dates (end minus start). If you want both endpoints included in a day count, add one day to the total.
How many days until a specific event?
Set the start date to today and the end date to your event — the total-days box is your countdown. It works for weddings, exams, visa appointments and project deadlines.
What counts as a business day?
Business days are Monday to Friday. Weekends are skipped, while public holidays are not subtracted because they differ by country.