Date Difference Calculator
Count days, weeks and business days between dates.
Input
This tool runs entirely in your browser. The data you paste or load is never uploaded.
Result
Enter your input, then run the tool.
About this tool
Calculates the interval between two dates in days, weeks, months and years, with options for inclusive counting and excluding weekends. Useful for deadlines, contracts and project planning.
How to use it
- Pick the start and end dates.
- Choose inclusive counting or business days.
- Read the breakdown of the interval.
Frequently asked questions
Are public holidays excluded?
No. Holidays vary by country and year; the business-day count excludes Saturdays and Sundays only.
Why do months and days look odd?
Calendar months vary in length, so 31 days can be one month and zero days or zero months and 31 days depending on the dates. Both interpretations are shown.
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