UtilityBaseCalculators
Weeks Between Dates Calculator
Count the exact weeks and days between two calendar dates.
Updated July 10, 2026
How to use the weeks between dates calculator
- 1Choose the start date.
- 2Choose the end date.
- 3Read the weeks and leftover days.
- 4Check decimal weeks and total days too.
Common uses
- Tracking pregnancy weeks
- Counting weeks left in a school term
- Measuring how long a project has run
- Planning a schedule in weeks
Frequently asked questions
How do I count weeks between two dates?
Find the total days between the dates and divide by seven. The whole number is complete weeks and the remainder is leftover days. From January 1 to February 1 is 31 days, which is 4 weeks and 3 days.
Does the order of the dates matter?
No. The tool measures the span between the two dates, so it gives the same number of weeks whether you put the earlier or later date first. It uses the absolute difference.
Is this calendar weeks or business weeks?
Calendar weeks — every seven days counts as a week, including weekends. If you need only working days, use a business-days calculator instead, which excludes weekends and holidays.
About this tool
The weeks between dates calculator counts the exact number of weeks and leftover days between two dates — the total days divided by seven, with the whole number as complete weeks and the remainder as extra days. It also gives the decimal weeks and total days. It's the count people reach for constantly: how far along a pregnancy is, how many weeks are left in a term, or how long a project has run. It counts calendar weeks and works regardless of date order. Everything is computed in your browser.
Like most tools on UtilityBase, the weeks between dates calculator runs entirely in your browser — nothing you enter is uploaded or stored on a server. It's free to use with no account required. Browse more calculators here.
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