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What does the error message "#VALUE!" mean and what can I do about it?

Error messages are unavoidable when dealing with Excel, and you may be surprised when they suddenly appear. Here are the meanings and countermeasures for these errors. As an example of preconditions, let's make a table like this...

2024.05.30

Excel Functions

How to set and remove sheet and book protection Excel (Excel)

If you are thinking about preventing Excel mishaps, this is a must! This article details how to set up and remove sheet and book protection. In fact, you can easily set it with a password. This article will help you protect your important data.

2025.06.06

Excel Functions

Forgot Password? How to Remove Read-Only (Write Protection) in Excel

If you forgot your Excel password, don’t worry! This article explains how to remove write protection easily by simply changing the file extension. Learn how to unlock read-only mode fast.

2025.07.12

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

Automatically create invoices from sales invoices 2 Excel (Excel)

Creating Invoices Automatically from Previous Sales Statements1 Continuing from Excel (Excel), we will create an invoice. Putting the details on the invoice (using a function)*Using the "FILTER" function using Spil*This one uses the Spil function, so you will need to use Microsoft365 or E...

2024.06.10

Excel FunctionsLet's make an invoice from a sales invoice.

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

Absolute and relative references in Excel (Excel)

Absolute and relative references are explained below. Relative reference: If you want to display the same contents in cell "C3" as in the neighboring cell "B3", enter the following in cell "C3": =B3. If you want to display the same content in cell "C3" as in the neighboring cell "B3", enter the following in cell "C3": =B3

2023.12.27

Excel Functions

2 Easy Ways to Hide or Show Zero Values in Google Sheets

Looking to hide zero values in Google Sheets? This must-read guide explains two easy methods—using custom formatting and the IF function. Discover how to instantly clean up your tables and boost the visual quality of your documents. Would you like a slightly shorter or more technical variation as well?

2025.06.18

googlesheet

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