About the Date Difference Calculator
Enter two dates to see the full span between them in days, weeks, whole months, and years, plus the number of business days (Monday–Friday) — useful for deadlines, anniversaries, and planning.
How it’s calculated
The difference counts calendar days between the two dates; business days exclude weekends.
Example calculation
From 2020-01-01 to 2026-01-01 is 2,192 days — six years including two leap days.
Frequently asked questions
Do business days include holidays?
No — the business-day count includes every Monday through Friday but doesn't subtract public holidays, which vary by country and region.
Does the order of dates matter?
No — the calculator uses the span between them, so you get the same magnitude regardless of which date you enter first.
This tool provides estimates for general informational and educational purposes only. Results are based on the values you enter and standard formulas, and may not reflect your specific circumstances.