How to use the Date Difference tool
- Choose between counting the time between two dates or adding / subtracting time.
- Enter the dates, or a start date and an amount.
- See the result in years, months, days, weeks, hours and business days.
Count days with confidence
Deadlines, notice periods, travel plans and project schedules all depend on counting days correctly. Business-day counts skip Saturdays and Sundays (Monday–Friday week).
Frequently asked questions
Is the end date counted?
Not by default. Tick “Include the end date (+1 day)” to count it.
Which days are business days?
Monday to Friday. Public holidays are not excluded.
Is the Date Difference tool really free?
Yes — completely free, forever. There is no sign-up, no payment, no watermark and no daily limit.