# How to Calculate the Date in Excel

## Calculate number of years between two dates

In Excel, you can calculate the number of years between two dates by typing the formula in a cell. Make sure that the unit is “y,” and that the number of days between the dates is in decimal years. Next, drag the Fill Handle to the bottom of the formula to copy the result. In the following example, we’ll calculate the number of years between two dates by subtracting 365 days.

## Days From Date calculator

A days from date calculator allows you to calculate how many days are left until 날짜계산기 any given date. Enter the current date or a future date and the calculator will provide the corresponding number of days. You can use the Days From Date calculator to plan a vacation or support query time period. This free online tool will also provide useful information when it comes to planning a work schedule or support query time period. There are a few input fields that you can fill in to calculate the number of days.

### Week number

To calculate the week number, first determine when your calendar year begins and ends. Most days of the year begin on Sunday. If a date is three days before or after that, then it would fall in week 51. For example, the date 3/15/2016 falls in week 51, not week 52. To determine what week of the year a date falls in, use the ISOWEEKNUM function in Microsoft Excel. This function will return the week number according to the standard ISO calendar.

To calculate the weekday of a given year, we need to know the date. Using the Julian calendar, the weekday is six + 5R days after the Sunday. Similarly, the century-based calendar has 365 mod 7 = 1. The weekday of a particular year is the first day of the following week. Here are two simple examples of how to calculate the weekday:

#### EOMONTH function

To determine the end of a month, use the EOMONTH function. The function returns the date for the last day of a given month in Excel. It accepts dates in the format “dd-mm-yyyy” or “mm-dd-yyyy”. The EOMONTH function can also be used to calculate due dates, maturity dates, and other similar dates.

#### DATEDIF function

To calculate a date, you can use the DATEDIF function in Excel. This function is versatile, but you must remember to use cell references. To use the DATEDIF function, type “date=” in the cell reference. If the cell reference contains a blank value, Excel will return a #NUM error. To correct this, change the cell reference format to a number. In Excel, you can also use a date reference to set a formula’s arguments.