📅 Free Calculator
Date Difference Calculator
Find the exact number of days, weeks, months, and years between any two dates. Includes business day count.
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What This Calculator Shows
Total Days
The exact number of calendar days between two dates, including or excluding the end date.
Weeks & Months
Converts the total days into whole weeks, months, and remaining days for easy understanding.
Business Days
Counts only Monday to Friday working days — useful for deadlines, contracts, and project planning.
Weekend Days
Shows how many Saturdays and Sundays fall between the two dates.
Frequently Asked Questions
Subtract the start date from the end date. The result in milliseconds divided by 86,400,000 gives you the total days. Our calculator does this instantly and also gives you weeks, months, and business days.
No. This calculator counts Monday–Friday as business days only, without excluding public holidays, as holidays vary by country and region. Subtract the applicable holidays manually for country-specific accuracy.
Yes. Set the start date to today and the end date to your event. The calculator will show exactly how many days, weeks, and months you have left until that date.
The count includes the start date and is up to (but not including) the end date, which is the most common convention. For inclusive counting (both dates counted), add 1 to the result shown.
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⚠️ Disclaimer: Date calculations are for general informational purposes only. For legally binding deadlines, contractual timelines, or regulatory requirements, always verify with the relevant authority or a qualified legal professional.