Week Calculator - Calculate the Number of Weeks Between Dates
The Weeks Calculator lets you calculate the number of weeks between two dates, or add and subtract weeks from any starting point. For example, if you’re organizing an event and want to know how many weeks there are between August 10, 2025 and November 30, 2025, just input the dates into the calculator. You can also use it to add 8 weeks to a project start date or subtract 12 weeks from a deadline.
- 3 weeks from 2025/7/4 is 2025/7/25.
How to Use a Week Calculator?
The week calculator is a simple tool that helps you calculate the number of weeks between two dates. Whether you're planning an event or tracking project timelines, knowing how many weeks are involved can make planning easier and more precise.
Calculate Weeks Between Any Two Dates
To use the week calculator between two dates, follow these simple steps:
- Select "Duration" mode
- Choose your start date using the calendar picker
- Choose your end date using the calendar picker
- The calculator will instantly display Total number of weeks between the dates
For example, if you want to know how many weeks are between:
- August 1, 2025 to October 31, 2025 → approximately 13 weeks
- September 15, 2025 to December 25, 2025 → approximately 14 weeks
- School semester planning: August 25, 2025 to November 30, 2025 → approximately 14 weeks
The calculator handles leap years and different month lengths automatically, ensuring accurate results every time.
Find the Date X Weeks Before or After a Given Day
Need to know what day falls 5 weeks from now or 8 weeks before a specific date? The week calculator from date mode helps you count forward or backward in weeks from any date you choose.Check opration type add(+) or subtract(-) then select your date , input Numbers of week value,Week calculator
Where auto calculte the date result.
Why Use a Week Calculator Instead of Counting Manually?
Manually counting weeks on a calendar is time-consuming and error-prone. A number of weeks calculator gives you instant, accurate results. Whether you’re calculating school terms, deadlines, or workout plans, it's far more efficient.
A Quick Way to Count Weeks Passed or Remaining
The week counter feature is especially useful when tracking the number of weeks that have passed since a starting date—or how many are left until a deadline.
Popular Use Cases for a Week Calculator
From pregnancy tracking to business planning, there are many situations where a weeks calculator proves useful. For example, students use it to plan assignments, while travelers use it to count the weeks until their departure.
Try Our Free Week Calculator Tool Online
Our week calculator is free to use and works directly in your browser. No download or sign-up required. Just enter your dates, and get instant, accurate results.