How to Use IF Function with OR in Excel

IF function with OR in Excel showing Flag for orders that are overdue or high priority and OK for the rest

The IF function is one of the most useful functions in Excel. You give it a condition to check, and it gives you one result when that condition is met and a different result when it isn’t. Simple idea, and you end up using it everywhere. But a single IF can only check one condition …

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VLOOKUP Not Working? (10 Common Fixes)

VLOOKUP Not Working (10 Common Fixes)

You wrote a VLOOKUP, hit Enter, and instead of the value you expected you got a #N/A error (or worse, a wrong number). It’s one of the most frustrating things in Excel, and it almost always comes down to a small mismatch between what you’re looking up and what’s actually sitting in your table. The …

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Count Cells That Are Not Blank in Excel

COUNTIF formula with the not-equal-to-blank criteria returning 8 non-blank cells

If you have a list with some gaps in it and you want to know how many cells actually have something in them, you cannot always trust a quick eyeball count. And this is because some cells that look empty are not truly empty, like a cell with just a space or a formula that …

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How to Fix #NUM! Error in Excel

How to Fix #NUM! Error in Excel

If you have a formula that suddenly shows #NUM! instead of a result, it means Excel ran into a number it cannot work with. This happens when a calculation produces an invalid numeric value or a result that falls outside the range Excel can handle. The good news is that #NUM! almost always points to …

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3D References in Excel

3d References in Excel

Say you have twelve monthly sheets that all look the same, and you want one total that pulls the same cell from each sheet. The manual way is to type out =Jan!B5+Feb!B5+Mar!B5 and keep going… for nine more months. There is a much better way. It is called a 3D reference, and it lets you …

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How to Convert Minutes to Hundredths in Excel

How to convert minutes to hundredths in Excel

If you want to convert minutes into hundredths in Excel, the trick is to turn each value into decimal hours. This is what payroll systems use, where The reason people get stuck is that the right formula depends on how your data is stored. A plain number like 90 needs one approach, and a real …

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How to Calculate Variance in Excel (Sample vs Population)

How to Calculate Variance in Excel - low variance vs high variance dot plots around a mean line

If you want to find out how spread out a set of numbers is, variance is the measure you’re after. The tricky part is that Excel has more than one variance function, and picking the wrong one gives you the wrong answer. The choice mostly comes down to one question: is your data a sample …

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How to Forecast in Excel (Formulas & Forecast Sheet)

How to Forecast in Excel - forecast chart with trend line and confidence band

If you want to predict future numbers in Excel, like next month’s sales or next quarter’s demand, you do not have to guess or do the math by hand. Excel can look at your past data, spot the trend, and project it forward for you. In this article, I’ll show you how to forecast in …

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How to Remove Header and Footer in Excel

How to remove the header and footer in Excel

If you have a worksheet with a header or footer you no longer want, you may sometimes face an issue deleting them. And this is because headers and footers only show up in Page Layout view and Print Preview, not in the regular Normal view. So they are not really stuck. You just need to …

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