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# How use DATEDIF Function in Excel

DatedIF function is the best tool to calculate your age from date of birth. Ahead In this post, I will show you how to use the DatedIF function in excel, why it is a useful & worth to learn.

## Use of DatedIF

DATEDIF Function In Excel will be your buddy if you want to calculate the interval between two dates. By using formulas you can calculate the difference between two dates.

## How To Find It

If you check your help system in Excel for DATEDIF Function you can’t find anything listed with this name. But, if you step back to the help system of the Excel 2000, you will find DATEDIF Function documented there. It is a mystery that why Microsoft has hidden the DATEDIF Function In Excel from his function list, and it is locked up in the dark.

It is a mystery that why Microsoft has hidden the DATEDIF  from functions list, and it is locked up in the dark.

## How to Use DatedIF Function In Excel

Syntax

DATEDIF(Date1,Date2,Interval)

Date1 The date from where you want to start the calculation of your interval. In simple words, it is the start date of the interval.

Date2 The date to which you want to calculate the interval. In simple words, it is the end date of your interval.

Interval It represents the unit of the time, which will return from the function. We have some specific text strings to represent different time units.

### Interval time units to calculate difference between two dates

We have 6 different types of intervals to calculate the difference between two dates.

#### Using “y” as Interval

It will return the complete years between the start date & the end date. It will ignore the months & days which are in excess.

In the above example, we have calculated the interval between two dates by using. And, we get 25 years in the result which are total completed years. But, if you actually check, the difference between two dates is more than 25 years (37 days more).

#### Using “m” as Interval

It will return the number of months between start date & end date, months which are complete. It will ignore the excess days.

In the above example, we have calculated the interval between two dates. And, we get 301 months in the result which are the total completed months. We have 7 excess days which are not considered in the result.

#### Using “d” as Interval

It will return the total days between start date & end date. The days are the smallest units between two dates, that’s why you will get total days here.

In above example, we have total days between two days.

#### Using “ym” as Interval

It will return a number of the complete months over the complete years. In simple words, if you have the total interval of 25 years 1 month & 7 days between two dates, it will return 1 month in the result.

In the above example, we have calculated the number of complete months left after competing years between start date & end date.

#### Using “yd” as Interval

It will return the number of the days over the complete years. In simple words, if you have a total interval of 25 years & 37 days between two dates, it will return 37 days in the result.

In the above example, we have calculated the number of days left after the complete years between start date & end date.

#### Using “md” as Interval

It will return the excess number of days over the complete months. In simple words, if you have the total interval of 301 months & 7 days between two dates, it will return 7 days in the result.

In the above example, we have calculated the number of days left after the complete months between start date & end date.

## Things To Remember While Using DatedIF Function In Excel

• DatedIF Formula will ignore the time in date.
• End date (Date2) should be greater than the start date (Date1)

## Conclusion

DATEDIF Function In Excel can help you to calculate interval days between two dates in different manners. You can also use this formula to calculate someone’s age.

## More Tips

• NC

You have ‘Using “ym” as Interval’ as a heading twice. I believe the second one should be ‘Using “yd” as Interval’ as that is what you’re describing below it in the paragraph. 🙂

• Puneet Gogia

Thanks NC.

Just Corrected Now.

You are Awesome. 🙂