Error CodeDescription#VALUE! You used the wrong type of data. Maybe your function expects a single value and you submitted a whole range. Or, more commonly, you might have used a function or created a simple arithmetic formula with a cell that contains text instead of numbers. #NAME? Excel can't find the name of the function you used. This error code usually means you misspelled a function's name, although it can indicate you used text without quotation marks or left out the empty parentheses after the function name. #NUM! There's a problem with one of the numbers you're using. For example, this error code appears when a calculation produces a number that's too large or too small for Excel to deal with. #DIV/0 You tried to divide by zero. This error code also appears if you try to divide by a cell that's blank, because Excel treats a blank cell as though it contains the number 0 for the purpose of simple calculations with the arithmetic operators. (Some functions, like AVERAGE(), are a little more intelligent and ignore blank cells.) #REF! Your cell reference is invalid. This error most often occurs if you delete or paste over the cells you were using, or if you try to copy a cell from one worksheet to another. #N/A The value isn't available. This error can occur if you try to perform certain types of lookup or statistical functions that work with cell ranges. For example, if you use a function to search a range and it can't find what you need, you may get this result. Sometimes people enter a #N/A value manually in order to tell Excel to ignore a particular cell when creating charts and graphs. The easiest way to do this is to use the NA( ) function (rather than entering the text #N/A). ######## This code isn't actually an error conditionin all likelihood, Excel has successfully calculated your formula. However, the formula can't be displayed in the cell using the current number format. To solve this problem, you can widen the column, or possibly change the number format if you require a certain number of fixed decimal places.