บทเรียน Excel

Explore how the TRIM() function removes extra spaces and cleans up your data. Combine it with other functions like SUBSTITUTE(), CLEAN(), and VALUE() to fix all kinds of formatting issues.

Learn to count unique values in Excel using basic and advanced formulas. See the difference between unique and distinct values.

There are multiple ways to generate random numbers in Excel, such as the `RAND(),` `RANDBETWEEN(),` and `RANDARRAY()` functions.

Merge two columns in Excel using the ampersand & operator or the CONCAT() function with a custom delimiter. Or use TEXTJOIN(), which lets you ignore blank cells.

Discover how to extract numbers from Excel strings using formulas. Master functions like RIGHT(), LEFT(), and TEXTJOIN() to target numeric data before, after, or anywhere in your text.

Explore simple subtraction for quick and effortless date calculations. Apply the DAYS() and DATEDIF() functions to achieve precise date intervals. Use NETWORKDAYS() and TODAY() to track working days and automatically exclude weekends and holidays.

Learn how to multiply in Excel, including how to multiply columns and rows. Learn to use simple formulas as well as functions like PRODUCT() and SUMPRODUCT().

Learn how to keep important rows and columns visible while you scroll in Excel. I’ve explained Freeze Panes step-by-step, with tips for solving everyday problems and improving your workflow.

Learn step-by-step techniques to handle INDEX MATCH with multiple criteria in Excel. Include helper columns to simplify your lookups, or else apply array formulas for complex data retrieval.

Remove unnecessary spaces, including leading, trailing, and extra spaces, to keep your data clear. This guide covers TRIM(), SUBSTITUTE(), and CLEAN() functions, plus practical tips to ensure spreadsheets remain accurate and easy to work with.

Discover how to handle complex criteria in a single formula. Elevate your reporting in a way that saves time and effort and reduces mistakes.

Discover how to enhance your data analysis with the Excel slicer. Learn advanced techniques to build dynamic dashboards and streamline your workflow.