How does the Weeks Between Dates work?

Calculate total calendar days between dates Then: Full weeks = floor(days ÷ 7) Then: Remaining days = days mod 7 Then: Partial weeks = total days ÷ 7 (decimal).

Can you give an example of how to use the Weeks Between Dates?

Example: Input 14 days apart gives a result of 2 full weeks, 0 remaining days.

Is the Weeks Between Dates free to use?

Yes — completely free with no registration, download, or subscription required. All calculations happen instantly in your browser.

How accurate is the Weeks Between Dates?

Our Weeks Between Dates uses verified mathematical formulas and is accurate to multiple decimal places. Results are calculated in real-time using the same methods used by professionals.

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Weeks Between Dates

Start Date

End Date

A weeks between dates calculator counts the number of full and partial weeks separating two dates. Used for pregnancy tracking, project planning, subscription billing, and event scheduling.

Symbol	Name	Unit	Description
start	Start date	date	Beginning date
end	End date	date	Ending date
weeks	Weeks between	weeks	Number of calendar weeks (may be decimal)

Period	Days	Weeks
1 month (avg)	30.44	4.35
1 quarter	91.3	13.04
6 months	182.6	26.09
1 year	365	52.14
Pregnancy	280	40.00

References

›ISO 8601 week date system

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Weeks Between Dates

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Weeks Between Dates