Time and Dates
Weeks Between Dates Calculator
Calculate the number of full weeks and leftover days between two dates, handy for pregnancy, leave or subscription tracking.
Your results
Full weeks8 weeks
Remaining days4 days
Total days60 days
Calculation breakdown
- Weeks
- floor(total days ÷ 7)
- Remainder
- total days mod 7
Worked example
From 01/01/2026 to 20/03/2026 is 78 days, which is 11 full weeks and 1 leftover day.
Assumptions
- Uses whole calendar days; time of day is ignored.
How this calculator works
This calculator converts the total number of days between two dates into full weeks plus any remaining days. It's commonly used for tracking pregnancy progress, parental leave, project sprints or subscription periods measured in weeks.
Frequently asked questions
How is a 'full week' defined?
A full week is any block of 7 consecutive calendar days; leftover days below 7 are shown separately.
Can I use this for pregnancy tracking?
Yes, enter your reference date and today's date to see how many weeks and days have passed.
Does it matter which date is first?
No, the calculator works out the absolute difference regardless of the order you enter the dates.
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