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How to add/subtract half year/month/hour to date or time in Excel?

To add year, month or hour to date or time is usual in our Excel daily work. Have you ever tried to add half a year, month, or hour to date or time? Here I introduce the tricks to handle with this job.

Add half year/month/hour to date or time with formulas

Add/subtract half year/month to date with Kutools for Excel

arrow blue right bubble Add half year/month/hour to date or time with formulas

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Here I introduce the formula to help you add half year/month/hour to date or time cell.

Operation Formulas
Add half year =DATE(YEAR(A1),MONTH(A1)+6,DAY(A1))
Add half month
Add half hour =A1+1/48

Select a cell, and paste one formula as your need from above table, here, I paste =DATE(YEAR(A1),MONTH(A1)+6,DAY(A1)) into a blank cell, B1, and press Enter key to get the result, and if you need you can drag the formula down to fill below cells.

doc add half year 1
doc add half year 2

Tip: Within above formulas, A1 is the cell you want to use, you can change it as you need.

arrow blue right bubble Add/subtract half year/month to date with Kutools for Excel

To remember above formulas may be somewhat annoy for you. However, with Kutools for Excel’s Formulas function group, you can quickly add or subtract half year, month or hour to date or time without remember formulas.

Kutools for Excel, with more than 120 handy Excel functions, enhance your working efficiency and save your working time.

After free installing Kutools for Excel, please do as below:

1. Select a cell to output the calculate result, and click Kutools > Formulas, and select a formula you need from the list. See screenshot:

doc add half year 3

2. For instance, select Add months to date form the Formulas group to add half year, and click doc select from Date Time to select a cell you want to use, and enter 6 into the textbox of Number. See screenshot:

doc add half year 6

Note: You can directly type the date you will add half year to into the DateTime box as “6/11/1990”.

3. Click Ok. And then drag the auto fill handle down to the cells you need.

doc add half year 4


1. To add half month, select Add days to date from Formulas group, and select the date needed to add, and enter 15 days into the Number textbox. See screenshot:

doc add half year 6

2. To subtract half year or half month from a date, just change 6 to -6, 15 to -15.

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Count times a word(count times of a specific word appears in a single cell or a range . There are dozens of usually used formulas in the Formula Helper.)

doc formula 1

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