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Month Calculator

Enter the start and ending dates and the tool will calculate the exact months between them.

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Find out the exact months and days between two given dates by utilizing this simple month calculator. No signup or registration is required to perform the calculation.

How To Calculate The Months Between Dates?

The calculation of the months and days is not as simple as it looks because all months do not have the same number of days, Some of them have 30 days, some have 31 days and the month of February has 28 days and 29 in a leap year.

By using an online monthly calculator from date you will just be required to provide both dates and it will perform the whole for you and will deliver accurate results effortlessly. 

What Is a Leap Year?

A leap year is a calendar year and there is no difference between the leap year and the normal year except the one that the leap year has one extra day in the month of February.

A leap year has 366 days. Approximately, it takes 365.25 days for the Earth to orbit the sun. We round it to 365 and to add the missing partial part, one whole day is added every four years to the calendar.

Number Of Months Formula:

Let's see the following formula to calculate number of months:

For calculating the difference in years:  

Year Diff = Y2 - Y1

Now calculate the age difference in months:

MonthDiff = M2 − M1 + 12 × YearDiff

Calculate the difference in days:

DayDiff = D2 – D1

If DayDiff < 0, adjust MonthDiff by subtracting 1 and calculate the number of days in

The previous month, then add that number to DayDiff. If it seems difficult then, simply go for a month calculator from date. It will let you count months and determine the time between two dates by just making a couple of clicks. If

You want to calculate months from date manually instead of using a month and day calculator, then the below-mentioned table will be very useful for you:

Month Names Number of Days Days in a Leap Year
January 31 31
February 28 29
March 31 31
April 30 30
May 31 31
June 30 30
July 31 31
August 31 31
September 30 30
October 31 31
November 30 30
December 31 31

Working Of Our Months Calculator From Dates:

Get the help of our online month counter to calculate the number of months between two dates without much manual intervention. Let's see how:


  • First of all, enter the “start date” and “end date” in the designated fields.
  • Make a tap on the “calculate” button to proceed with the calculation. 


  • Months and Days.

Getting the assistance of an online month calculator enables you to perform the calculation swiftly without much manual intervention. 


What Is The Duration Of Calendar Months?

According to the Gregorian calendar, the mean month length is  30.436875 days. 

How Do I Calculate The Remaining Months In Excel?

To calculate the remaining months in Excel utilize DATEDIF with “ym”. Now in another cell use “ym” parameter with the DATEDIF formula. It will provide you with the remaining months. Generally, you can get the help of a month tracker to calculate the remaining months. 

How Many Months Have 31 Days?

There are seven months that have 31 days. 

Why is a Month 30 Or 31 Days?

Each year the moon completes 12 cycles. That’s why the calendar was divided into twelve months and it reached 355 days. But according to the beliefs of the Romans, even numbers were unlucky so the length of the months changed between 29 or 31 days in the Pompilius calendar. 


From the source of Wikipedia: Month

From the source of Calculate the difference between two dates

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