Week Counter
This is free online week counter, or calculator to find weeks between dates, add or subtract weeks.
Between Dates
Add Weeks
Subtract Weeks
Start Date
End Date
How to Use This Calculator
- Choose your calculation type from the options above (Between Dates, Add Weeks, or Subtract Weeks)
- For Between Dates: Select your start and end dates to find the number of weeks between them
- For Add Weeks: Choose a start date and enter the number of weeks you want to add
- For Subtract Weeks: Select a date and enter the number of weeks to subtract
- Click the calculate button to see your results instantly
Weeks Calculation
Between Dates:
Weeks = (End Date - Start Date) / 7
Days = End Date - Start Date
Add Weeks:
Result Date = Start Date + (Weeks × 7 days)
Subtract Weeks:
Result Date = Start Date - (Weeks × 7 days)
All calculations account for:
- Leap years (366 days)
- Regular years (365 days)
- Varying month lengths
- Partial weeks (with decimal points)
Frequently Asked Questions
How accurate is the week calculator?
Our week calculator provides accurate calculations by calculating leap years, varying month lengths, and partial weeks.
However, the result will be in rounded to one decimal place for accuracy.
Can I use this for pregnancy calculations?
You can use this calculator for pregnancy calculation. However, for medical purposes,
always consult with your healthcare provider as they may use specific medical standards
for pregnancy week calculations.
How are weeks calculated between dates?
The calculator takes the difference between two dates in days and divides it by 7.
It also calculate leap years and varying month lengths. The result includes partial weeks
for more correct results.
Why do I see decimal points in the results?
Decimal points in the results are th partial weeks. For example, 3.5 weeks means three
and a half weeks. This provides more accurate results than rounding to whole weeks.
