Date Difference & Days Calculator

Calculate exact number of days, weeks, months, years, and working business days between two dates.

Start Date

End Date

Include end day in calculation (+1 day)

Total Difference

0 Days

Years, Months, Days

Weeks & Days

Business / Working Days

Hours & Minutes

How to Use this Tool

1. Select or pick the Start Date (click 'Today' for current date). 2. Select the End Date or use quick shortcut buttons (+30 days, +1 year). 3. Check the optional box if you want to include the end date in counting. 4. View total days, years/months/days breakdown, weeks, and working business days.

Mathematical Formula & Explanation

Total Days Difference = (End Timestamp - Start Timestamp) / (1000 × 60 × 60 × 24) Calendar Breakdown: Years = End Year - Start Year Months = End Month - Start Month (adjusted for days) Days = End Day - Start Day (adjusted for month length) Business Days = Total calendar days excluding Saturdays and Sundays.

About Date Difference & Days Calculator

Accurate date duration and countdown calculator. Finds the exact time span between any two dates on the calendar with breakdown in total days, weeks, months, working business days (excluding weekends), hours, and minutes.

Frequently Asked Questions (FAQs)

2 Questions

Everything you need to know about Date Difference & Days Calculator and how it works.

What is the difference between calendar days and business days?

Calendar days count every consecutive day on the calendar. Business or working days exclude weekends (Saturdays and Sundays), giving an accurate timeframe for office projects, delivery schedules, and legal deadlines.

Can I calculate the date difference in the past or the future?

Yes, you can calculate the duration between any past dates (historical milestones), future dates (countdowns to events), or between a past date and a future date.