Date Difference & Business Days Calculator
Find the exact calendar days, business working days, weeks, months, and hours between any two dates. Exclude Saturdays/Sundays, customize custom holidays, toggle inclusive date ranges, or add and subtract years, months, weeks, and days from any date — 100% free and instant in your browser.
Date Difference & Business Days Calculator
Calculate exact days, business working days, weeks, months, or add/subtract time from any calendar date.
Wednesday, October 7, 2026
Friday, November 6, 2026
How to use this tool
Select your Start Date and End Date.
View total calendar days, working business days (weekends excluded), and exact breakdown in years, months, and days.
Optionally toggle 'Include End Date' (+1 day) or add custom holiday dates to exclude.
Switch to 'Add / Subtract Days' to calculate future or past calendar dates.
Frequently asked questions
How are business days calculated?
Business days count all Monday through Friday working days between the selected start and end dates, skipping weekend days (Saturday and Sunday) and any specified custom holidays.
What does 'Include End Date' mean?
By default, date difference measures the span from Start 00:00 to End 00:00. Turning on 'Include End Date' counts both the start and end days inclusively as full whole days (+1 day).
Can I customize which days are considered weekends?
Yes! You can choose between Saturday & Sunday (Standard), Friday & Saturday (Middle East schedule), or Sunday Only.
Can I add business days only to a future date?
Yes. Switch to the 'Add / Subtract Days' tab and enable 'Count Business Days Only' to skip weekends when computing your deadline or delivery date.
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