6+ Iferror 使い方 For You

Introduction

Excel is an essential tool for businesses and individuals alike, and it's important to understand its various functions to make the most of its capabilities. One of the most useful functions in Excel is Iferror, which helps identify and handle errors in formulas. In this article, we will explain what Iferror is and how to use it effectively.

What is Iferror?

Iferror is an Excel function that allows you to handle errors that occur within a formula. It returns a specified value if the formula results in an error, and a different value if there is no error. This function is particularly useful when dealing with large data sets or complex calculations, as it can save a lot of time and effort.

How to Use Iferror

To use Iferror, simply enter the function into a cell and specify the formula you want to evaluate. For example, if you want to evaluate the formula in cell A1 and return the value "Error" if there is an error and "OK" if there is no error, you would enter the following function: =IFERROR(A1,"Error","OK") This function will return "Error" if there is an error in the formula in cell A1, and "OK" if there is no error.

Common Errors and How to Handle Them

One common error that Iferror can help handle is the #DIV/0! error, which occurs when a formula attempts to divide by zero. To handle this error, you can use the following function: =IFERROR(formula,0) This function will return a value of 0 if the formula results in the #DIV/0! error. You can replace the 0 with any value you want to return in the event of an error. Another common error is the #N/A error, which occurs when a formula cannot find a value it is looking for. To handle this error, you can use the following function: =IFERROR(formula,"Not Found") This function will return the value "Not Found" if the formula results in the #N/A error. Again, you can replace "Not Found" with any value you want to return in the event of an error.

Advanced Techniques

Iferror can also be used in combination with other functions to create more complex formulas. For example, you can use Iferror to handle errors in a Vlookup function as follows: =IFERROR(VLOOKUP(lookup_value,table_array,col_index_num,0),"Not Found") This function will return the value "Not Found" if the Vlookup function cannot find the lookup value in the specified table array.

Conclusion

Iferror is a powerful function that can help you handle errors in your Excel formulas. By understanding how to use Iferror effectively, you can save time and effort when working with large data sets or complex calculations. We hope this guide has provided you with the knowledge you need to make the most of this function in 2023 and beyond.