About Days Calculation

Calculating days between dates is crucial for project planning, legal deadlines, rental agreements, and interest calculations. This calculator handles both calendar days and business days (excluding weekends and custom holidays).

How to Use

Select start and end dates using the date pickers
Toggle business days calculation to exclude weekends/holidays
Customize weekend days and add specific holidays if needed
Results update instantly with total days and breakdown

Examples

Project timeline: 45 business days from Jan 1, 2024 = March 8, 2024 (excluding weekends and holidays)
Rental period: 90 calendar days from June 1 = August 29
Legal deadline: 30 business days from notice date

Reference Table

Time Period	Days
1 week	7 days
1 month (average)	30.44 days
1 year (non-leap)	365 days
1 year (leap)	366 days
Business week	5 days

Frequently Asked Questions

Are the start and end dates included in the count?

This calculator uses inclusive counting - both start and end dates are included in the total. For example, from Monday to Wednesday is 3 days.

How are holidays handled?

Holidays are only excluded when using business days calculation. Enter dates in YYYY-MM-DD format, separated by commas.

What about time zones?

Calculations use your browser's local time zone. For precise results across time zones, consider using noon time to avoid daylight saving issues.

Days Between Dates Calculator

Results

Quick Days Converter

Menu

Days Between Dates Calculator

AI Assistant

Was this tool helpful?