Date Difference Calculator

Measure the span between two dates, then add or subtract days from any date.

Difference Between Two Dates

Results update as you type. Business days count Monday–Friday, start date inclusive and end date exclusive; month lengths are respected (Jan 31 + 1 month = Feb 28).

Add or Subtract Days

Calendar days are applied directly; the business-day result skips Saturdays and Sundays.

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