The code also read the system settings to get the right date format, first week of the day and more.

The macros exemplify how class collections can make things a lot easier and less complicated. You can download a workbook with it all.

However it is very difficult (if possible) to count the cells that are changed, so in some cases it is better to use VBA macros instead. This page shows an example, and you can download a workbook with the example.

The number of rows is user defined, unless you want a calendar with 24 rows for 24 hours and the hour intervals (00-01, 01-02 etc.)..

A calendar in Excel is fine for keeping track of e.g. how many hours uou spend on different tasks/projects, overtime, employees or whatever.

The macro will prompt you for the year and number of rows and then make the calendar in a split second. You can download a workbook with the code.

It is not as complicated as it may sound! Sample workbook for download.

If you don't want that, you can do a search and replace, where you replace the reference with nothing, but if it is something you do frequently, it is smarter to use a macro.

The trick is to copy all the formulas (not the values) in a range to an array in one go, and then copy the array to a range in the other workbook. That way the formulas will not change in any way.

The macro also shows how to let the user select ranges, how to use the GetOpenFileName method to get a file name and path and a simple way to check if a workbook is open or not.

This page shows an example on how to do just that. It uses the Like operator to look for matches. "Like" can look for exact matches, and it allows patterns with wildcards. The copied rows are inserted as a new table in another (new) workbook, but that can easily be modified.

The macro uses an inputbox, ranges, arrays and a loop.

Names of months and days, first day of the week and possible date formats are based on the user's system settings. Several examples on how to use date functions, and there is also a simple class module to handle click events by declaring Public WithEvents.

If you want to use the date(s) for something special, you can just add your own code.

I wrote this for the fun of it using VBA macros only and no ActiveX. Different versions of MS Office use different ActiveX controls, and that causes problems, which you avoid if you use VBA only.

This page shows how, and it also shows you can save the functions as an addin, so you can use them in all your workbooks.

With this technique you can analyze a lot of data in seconds.

The macros use ranges, arrays, userforms, a listbox, loops and more. The macros are in one spreadsheet that operates on another containing the data. That is useful if the data has been imported from a text file or a csv-file.

You can download a zip-compressed spreadsheet with the macros and userforms.

If you can get something resembling a log file with times into Excel, you can tailor a macro to calculate time and extract data. Calculating time can be useful for much more than just stops and starts.

The example uses the VBA function DateDiff, loops, ranges, arrays and a collection. You can also download a spreadsheet with the example.

You can watch a video with examples and download the spreadsheet used in the video.

It is easy to scale to e.g. the nearest thousand, but a chart would look pretty silly if the highest value is 7. You need something more flexible.

So I wrote this function that will return a round value depending on the input value. Examples:

2 returns 3

13 returns 20

67 returns 70

136 returns 200

377 returns 400

1477 returns 2000

3333 returns 4000

etc.

It is easy to modify the function, if you need to round up or down.

It isn't difficult to make manually, and there are many tutorials on the internet, but it takes time, and why bother when you can make them fast and easy using VBA macros? This page shows how to, and there is also a sample Excel workbook. The chart's source values don't have to be in the same workbook as the macros.

The first one shows how to make a histogram (columns) with a bell shaped curve. The curve has a normal distribution and is based upon the data set's standard deviation and mean value.

The curve is made by generating 2000 "random" numbers with VBA's random number generator, Rnd, in combination with a worksheet function.

The other example shows how to make a histogram with a userdefined number of columns/intervals.

You can also download a workbook with the VBA code and start making histograms straight away.

However you cannot use the fast For Each Next loop to loop through your own class collections. That is: Unless you know the trick. This page shows how to do it.

I wrote the macro, when I wanted to import access log files for my website into Excel for analysis. These files can be pretty big, and Excel 2003 (which I still use) has a max number of rows of "only" 65536.

The macro splits the text file into smaller files with e.g. 65500 lines/rows. The last file will usually be smaller. The new files are saved in the same folder as the original and get the same name with a number added (1, 2, 3 etc.).

The macro uses the HetOpenFileName function, the Split() function, arrays, a Do While loop and shows how to open and save files with VBA.