First of all, let’s clarify the general question of what “conditional formatting” actually is.

As the name already implies, this is a cell formatting that under certain conditions takes place automatically. So we can e.g. The table says that if a cell contains a predetermined value, or if it is within a certain range, that cell will be highlighted in color.

Of course, this is first of all a bit of work, but it’s a job you do just once, and then the process runs automatically.

Now we come to the point.

In our first example, let’s look at the simplest discipline of conditional formatting in the form of predefined rules, and we have built up a sample table of budget expenditures for a year in which some values ​​deviate from the usual ones that we get in the case of an increased amount red, and color at a lower amount with a green background.

To do this, we proceed as follows:

• The first line of the table in which the numerical values ​​that should be considered for formatting should be highlighted.
• In the “Start” tab, click on “Conditional Formatting” and click on “Highlight Rules” – “Greater than”.
• Then set the upper threshold and the color from which the formatting to be held.

Then again the same game, only that we click here on “less than” a lower threshold and a corresponding color set.

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Thus, after we have set the thresholds for each item, our table looks like this in the end result:

See picture: (click to enlarge)

For example, if you create a household table at the beginning of the year and set thresholds for each item, Excel will automatically check whether the cell is colored or not when you enter it using Conditional Formatting.

This allows you to detect deviations at a glance without having to filter data or have to look through it manually.

In our next example we want to go off the beaten path and set our own rules for conditional formatting.

For the sake of simplicity, we will stick with our small household table and will display all duplicate values in bold.

To do this, we proceed as follows:

• We mark the entire cell area of the table which in the formatting should be considered.
• Then we click again on “Conditional Formatting” then on “New Rule” and select the option “Format only unique or duplicate values”

See picture: (click to enlarge)

Then on “Format” and in the tab “Font” we choose FAT and confirm with “OK”.

See picture: (click to enlarge)