Date Difference Calculator
Calculate the exact number of days, weeks, months, and years between any two dates.
Find Date Difference
Total Difference
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Total Days
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Total Weeks
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Business Days
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Weekends
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Popular Use Cases
- Count days until an event or deadline
- Calculate project duration
- Find days since a past event
- Calculate contract or lease length
- Track pregnancy weeks
Frequently Asked Questions
Does the calculator count the start date?
The calculator counts the difference between dates, not including the start date itself. For example, Jan 1 to Jan 3 = 2 days. If you want to include both endpoints, add 1 to the result.
What are business days?
Business days (also called working days) are weekdays — Monday through Friday — excluding weekends. This count does not include public holidays, which vary by country and region.