13- 17 May, 2013

# ISNUMBER Excel function

How to use the ISNUMBER excel function to differentiate between cells that are a valid excel number and others which are not.

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## ISNUMBER Excel function

The ISNUMBER Excel function allows you to check whether a cell contains a number or not. So for example if we want to use the ISNUMBER function, we activate the function wizard, we find it, say ok. And you’ll see you only have to just point at the cell where you’re trying to check, & we say ok. You’ll see in this case it tells us that that is a number so it’s true. And the benefit is if I copy this down, you’ll see it looks & it says true. If there’s an error message, for example a divide by zero message, it will then identify that there’s a false.

So you can build some sort of a check to say, if there’s an error, tell me something or do something. Typical example would be equals if that equals true, then we just want to show whatever numbers there. If it equals false, then for example we put a zero. And now when we copy & paste that down, you’ll see it automatically looks, & if it’s an error it’ll then put a zero otherwise it’ll actually bring the number through , which just actually helps to avoid errors that creep into models & filter through all the calculations.

## Advanced Excel Course

Advanced Excel Course – June 2013 in South Africa Our next advanced excel course is running during June 2013 in Johannesburg. During the week of the 10th June we offer the following options. You can either attend the full 5 … Continue reading

## Creating a Waterfall Chart in Excel the easy way

A very popular chart is the waterfall chart which shows the impact of various items on a total e.g. the various components that explain the move from budgeted profit to actual profit. A common way to build this is using … Continue reading

Just a quick note to say your blog is brilliant. Full of useful bits of info. After your courses, I am by far the best modeller in our office, and we regularly get comments from our business partners on the quality of our models. Thanks for all the help,

– Mike

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