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Creating a QR Code in Excel (Excel)

QR codes are a very convenient way to tell someone a URL or email address, rather than a string of text. It is a very convenient tool because all the recipient has to do is read it. However, the only way to make them is to create and download them using free sites on the Internet...

2024.05.16

Excel Functions

How to use the sheet protection function.

After you have created a great system or tool in Excel, do you ever have this fear when you want others to use it? What if someone accidentally breaks a formula... What if an important function is deleted? I only want to edit the cells I need, but...

2024.10.08

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 display time in 15-minute increments (CEILING and FLOOR functions) Excel

In the last issue, we introduced how to use the TIME function to display the time in 15-minute increments, 30-minute increments, etc. (TIME function) Excel pointed out that it would be easier to use the CEILING and FLOOR functions...

2024.06.18

Excel Functions

How to Hide Sheet Tabs in Excel – Fast & Easy

A must for Excel system creators and those considering preventing erroneous operations. This article explains with images how to hide sheet headings to prevent unexpected operations. In fact, it can be achieved with only a simple option setting. This article will help you create safe Excel files.

2025.06.11

Excel Functions

How to Convert Excel to Google Sheets (Step-by-Step Guide for 2025)

This article provides a detailed, beginner-friendly explanation of how to convert Excel files into Google Sheets. Are you struggling because a client has asked you to submit your data in Google Sheets format? The truth is, the conversion process is easier than you might think. Written by someone with experience in streamlining IT workflows, this guide walks you through the steps clearly and practically.

2025.06.05

googlesheet

"How to Create Your First Excel Macro (Beginner’s VBA Guide)

To write a VBA, you start with the "Development" tab, which is not present by default. Click on the File tab, then click on the option...

2024.05.28

Excel Macro (VBA)

Excel: Color Cells When Input Doesn’t Match Dropdown List

In this article, you'll learn how to use conditional formatting in Excel to automatically change cell colors when a value entered doesn't match the dropdown list. If you've been struggling with errors during data aggregation using the VLOOKUP function, you're not alone. Fortunately, combining the MATCH and ISNA functions offers a simple and effective solution.

2025.06.11

Excel Functions

How to install .NET FrameWork

What are the versions of the .NET Framework? NET Framework (DotNet Framework) comes in various versions (types of toolboxes) with slightly different tools inside...

2024.10.01

Excel Macro (VBA)

How to use the variable type "Workbook" Excel(Excel) Macro(VBA)

For other variable types, please refer to Excel (Excel) Macro (VBA) about variable types. First, we will explain the basic usage of the variable type "Workbook".

2024.06.14

Excel Macro (VBA)