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This tool calculates the exact difference between two dates and times: a calendar breakdown in years, months, and days, a total duration in a single unit (just days or hours), and separately, the number of business days excluding weekends.

How to use it

• Pick a start and end date (optionally with time and timezone) and the result is calculated instantly.
• The calendar breakdown reads naturally: "2 years, 3 months, 10 days" rather than just a raw day count.
• Business days are shown separately — weekends (Saturday and Sunday) are excluded from that count.

Common uses

• Working out how long a contract, warranty, or subscription runs in calendar units.
• Planning a project deadline in business days, excluding weekends.
• Calculating an age, tenure, or event duration down to the day.

Things to keep in mind

A calendar difference (years/months/days) depends on the actual dates involved — months have different lengths, so "1 month" can mean anywhere from 28 to 31 days.

The business-day count only excludes Saturday and Sunday — public holidays need to be subtracted manually if they matter for your calculation.