Week Calculator

Calculate the number of weeks between any two dates with this week calculator! You can also add or subtract the number of weeks from a given date to determine future or past dates.

How To Use This Week Calculator?

Our week counter helps you to find the date between weeks using three options. Just pick one of them, enter the values, and get the weeks between the given dates!

1. Add Weeks

• Enter "Start Date" or set it by using date picker
• Put the "Number of Weeks"
• Click on "Calculate"
• This calculator shows the new date after adding the specified number of weeks

2. Subtract Weeks

• Enter a "Start Date" 
• Put the "Number of Weeks"
• Click on "Calculate" 
• The online week calculator provides the date that occurs before the given number of weeks

3. Weeks Between Two Dates

• Enter the "Start Date" and "End Date"
• Click on "Calculate"
• Our calculator find out the number of weeks between the two dates

How to Calculate Number of Weeks Between Two Dates?

To calculate the number of weeks between two specified dates, find out the total number of days between the starting and ending date. Then divide the total number of days by 7.

Number of Weeks = END Date - START Date / 7

If the result includes a decimal, round it down to the nearest whole number to get the number of full weeks.

There is also another method to count down the number of weeks. Instead of using the above formula you can also follow that steps:

• Identify the Start and End Dates
• Count the days between the two dates
• Convert days into weeks

Example:

Calculate how many weeks there are between January 1, 2025, and February 26, 2025.

Solution:

Step # 1: Identify the Start and End Dates

• Start Date: January 2, 2025
• End Date: February 26, 2025

Step # 2: Count the days between the two dates

END Date – START Date

Feb 26, 2025 – Jan 2, 2025

Total Days = 30 + 26 = 56 days

Step # 3: Convert days into weeks

Weeks = 56 / 7

= 8 weeks

FAQs:

How many weeks are there in a year?

Typically there are 52 weeks and 1 day in a year.

How do you convert days into weeks?

To convert the days and given dates into the weeks, divide the number of total days by 7. Suppose there are 21 days that are equal to the 3 weeks.

Can I find out the day of the week for dates in the future?

Yes, this week calculator can be used to find days of the week for any week either its be for present, past, or future.

Why do some years have 53 weeks?

If January 1st falls on Thursday or its a leap year starts from Wednesday that it has 53 weeks. This happens almost every 5–6 years.