Plain Date Tools

Weeks Between Dates

Count the weeks and days between two calendar dates. Useful for project timelines, billing cycles, and personal planning.

Type digits only; hyphens are added automatically in the selected format.

Worked examples

  • March 1 to March 15 is 2 weeks and 0 days (excluding the end date).
  • March 1 to March 16 is 2 weeks and 1 day (including the end date).
  • January 1 to April 30 is 17 weeks and 2 days (excluding the end date).
  • December 25 to January 1 is 1 week and 0 days (excluding the end date).
  • February 28 to March 1 in a leap year is 2 days, or 0 weeks and 2 days.

Frequently asked questions

How is "weeks between dates" different from "days between dates"?

It expresses the same span as weeks and leftover days, which is more useful for project planning and billing cycles.

Can I include the end date?

Yes. Check "Include end date" to count both the start and end date. Leave it unchecked to count the elapsed boundaries between them.

Does this handle leap years?

Yes. The calculation follows the Gregorian calendar, including February 29 in leap years.

Is this a business-day calculator?

No. Every calendar day is counted. For weekdays, use the Business Days Between Dates tool.

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