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Date Difference Calculator

Calculate days between two dates using start date, end date, days to add or subtract

Choose a date workflowCompare ordinal dates, shift a date, or count business days with holiday settings.
6 options
DAYS BETWEEN TWO DATES32 days

Calendar difference = end − start

Estimate based on the values shown
MethodOrdinal date arithmetic; business days iterate the interval and remove weekends plus user-defined in-range holidays. Gregorian workflows validate real dates, apply calendar-component shifts, and count business days with named and custom holiday calendars. Business-day calendars accept twenty custom recurring month/day holidays. Each custom holiday row also accepts an optional descriptive name.

Before you use the result

Check the entered units and assumptions before using the result for purchasing, construction, engineering, or safety decisions.

EDITORIAL NOTES

Using the Date Difference Calculator responsibly

Page-specific guidance based on this calculator’s implemented method, inputs, and known limits.

What this result is useful for

This workspace compares dates, shifts a date, or counts calendar and business-day intervals depending on the selected mode. Use the mode label to distinguish elapsed days from inclusive counts and working-day schedules.

Assumptions and limits

Calendar operations use Gregorian dates. Business-day results depend on the chosen weekend treatment and entered holiday list; they do not automatically know every national, regional, religious, employer, or emergency closure.

How to check the result

Check whether endpoints are included, then test a short interval that crosses a weekend or listed holiday. For contractual or regulatory deadlines, confirm the governing calendar and counting convention with the responsible authority.

Content review: August 21, 2026
INTERPRET THE RESULTRead the other guideCheck assumptions, limitations and comparison methods →
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