Date Difference Calculator

Find the exact number of days, weeks, months, and years between any two dates

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Frequently Asked Questions

How do I calculate the number of days between two dates?

Enter your start date and end date into the fields above, then click Calculate. The tool instantly shows the exact number of days between the two dates, along with a breakdown in weeks, months, years, and business days.

What counts as a business day?

Business days are weekdays (Monday through Friday). Saturdays and Sundays are excluded. Note that this calculator does not account for public holidays.

Can I calculate the difference in years and months?

Yes. The result shows a complete breakdown: total days, total weeks, business days, and a years/months/days breakdown. For example, 400 days = 1 year, 1 month, and 5 days.

Is this date calculator free?

Yes, completely free. All calculations happen directly in your browser — no data is sent to any server, and no account is required.