Date Difference Calculator
Find the exact difference between two dates.
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Weeks
Months
Years
Business Days (approx)
Hours
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Frequently Asked Questions
How are business days calculated?
Business days exclude weekends (Saturday and Sunday). This is an approximation — it doesn't account for holidays.
Does this account for leap years?
Yes, the calculation uses exact date arithmetic which inherently accounts for leap years.
Can I calculate future dates?
Yes, set the start date to today and the end date to any future date to count days until an event.
How is the month count calculated?
Months are approximated using 30.44 days per month (365.25/12). For exact months, use the age calculator.
What is the difference between calendar days and business days?
Calendar days include all days. Business days exclude weekends and are typically 5 out of every 7 calendar days.