Select a start date and end date, then click Calculate Difference.
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Frequently Asked Questions
How does it handle different month lengths?
It tracks day-of-month differences separately and adjusts for shorter months.
What if end date is before start?
The calculator always shows the positive difference.
How accurate is the day count?
Very accurate — uses millisecond timestamps divided by 86,400,000.
Can it count business days?
This counts all calendar days. Subtract weekends manually for business days.
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