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Date Difference Calculator

Count days, weeks, months, or years between any two dates — inclusive or exclusive of weekends.

Daniel Oh By Daniel Oh
Published Last reviewed 1 min read

Inputs

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

Difference in calendar days between the two dates, then derived breakdowns (weeks = days / 7, etc.). Business-day mode excludes Saturdays and Sundays.

In depth

Count days, weeks, months, or years between any two dates — inclusive or exclusive of weekends.