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VLOOKUP function gives #N/A or #REF!

The VLOOKUP function is a very useful function for handling data, but many of you may have experienced that once you get stuck in the error swamp of #N/A or #REF! In this article, we will discuss how to use the VLOOKUP function to get rid of the #N/A and #REF!

2024.07.05

Excel Functions

Switch between manual and automatic recalculation methods in Excel (Excel)

Excel, which contains a large number of formulas, will recalculate each time you perform some operation, and you will not be able to perform the next operation until the calculation is finished. If you feel that Excel is too slow, you can stop the recalculation to make it run more smoothly. Also, for some reason without realizing it...

2024.05.30

Excel Functions

For beginners] Explanation of causes of Excel being slow and countermeasures.

Manager, have you ever felt 'kind of heavy' when using Excel? Student Yes, sir! I recently started using Excel to improve my business, but I'm having trouble opening files because it takes so long. ManagerYes, that's right. Many people have the same problem...

2024.10.02

Excel Functions

How to Prefer Manual Fill to Conditional Formatting Excel (Excel)

Conditional formatting is a very useful feature that automatically fills in or changes formatting based on specified conditions. However, many of you may have experienced the problem that conditional formatting takes precedence over manual filling. In this article, we will discuss how to use conditional formatting...

2024.07.09

Excel Functions

How to Round Time to 15-Minute Intervals in Excel (Easy Formula Guide)

Struggling with time rounding in Excel? This guide shows you how to combine TIME and ROUND functions effectively. Simple techniques that boost productivity. Master time rounding calculations with ease.

2025.07.15

Excel Functions

Digital certificate can no longer be selected when logging in to a site (Edge)

Have you ever seen the following error message when using login with a digital certificate? The certificate you have selected is not available for this service. Please close all browser windows and try again. Internet ban...

2024.08.02

Edge

How to Clear Sheet Data with Excel VBA: Simple Macro Tutorial for Beginners

Tired of manually deleting large amounts of Excel data? This article explains how to delete sheet data using VBA macros with ClearContents, Clear, and Delete—completing the task in seconds.

2025.06.18

Excel Macro (VBA)

PrintOut" printer and automatic printing Excel(Excel) macro(VBA)

Have you ever had the experience of printing the same Excel file every time, only to have to set it up again and again? Have you ever had such an experience? Many people spend a lot of time on Excel printing. Especially in an environment where multiple printers are used, it is a big hassle to change print settings...

2025.06.18

Excel Macro (VBA)

[For Beginners] Step-by-Step Guide to Installing SeleniumBasic

This article offers a beginner-friendly, detailed guide to installing SeleniumBasic. Stuck on the installation and thinking about giving up on automation? The truth is, anyone can install it by taking it one step at a time. A professional with 20 years of experience teaching Excel will walk you through the process.

2025.06.16

Excel Macro (VBA)

Excel Macro (VBA): How to use the CountIfs function in VBA!　

If you are a beginner who wants to use Excel's COUNTIFS function in VBA, this is a must. This article provides a thorough explanation from basic writing to error handling. In fact, with a few tricks, you can reduce processing time from a few minutes to a few seconds. Read this article and you will be able to efficiently tabulate data from tomorrow.

2025.02.12

Excel Macro (VBA)