Hafizul Islam

About author

Hafizul Islam is an excellent marine engineer who loves working with Excel and diving into VBA programming. For him, programming is like a superhero tool that saves time when dealing with data, files, and the internet. His skills go beyond the basics, including Rhino3D, Maxsurf C++, AutoCAD, Deep Neural Networks, and Machine Learning. He got his B.Sc in Naval Architecture & Marine Engineering from BUET, and now he's switched gears, working as a content developer. In this role, he creates techy content all about Excel and VBA. You'll find him reading books, travelling, and enjoying movies and TV series outside work.


Excel & VBA Content Developer at ExcelDemy in SOFTEKO.

Lives in

Dhaka, Bangladesh.


B.Sc in Naval Architecture & Marine Engineering, BUET.


  • Design and Drawing Software: AutoCAD, Rhinoceros, Gambit, Tecplot
  • Analysis Software: ANSYS Fluent-19, ABACUS, Maxsurf, Hydromax, Excel, Word and PowerPoint proficiency
  • Programming Languages: C++, Fortran, Python, MATLAB


  • Adjunct lecturer, Department of Naval Architecture and Marine Engineering, Sonargaon University, Dhaka.
  • Engineer, Amader Environment Systems Ltd (AESL).


  • "Numerical Modeling of a Single-Disk Micro-scale Viscous Pump" is accepted for poster presentation and published in the “Book of Abstracts of ICME2019” (Paper ID: 217) at ICME held in December 2019 at BUET, Dhaka.
  • Numerical Modeling of a Double-Disk Micro-scale Viscous Pump.

Latest Posts From Hafizul Islam

Attendance and Overtime Calculation Sheet in Excel

You are in the right place if you have questions about how to keep records of attendance and calculate overtime hours in Excel based on employees' "In Time" ...

Line Graph in Excel Not Working: 3 Methods

Method 1 - Line Graph Command Is Producing Two Lines If you want to show two lines in a chart, you need to convert one series of data (in this example, Year) ...

How to Calculate Market Share in Excel (4 Related Examples)

In this article, you will learn 4 examples to calculate market share in Excel. There are many business scenarios that involve calculating market shares. ...

How to Add Barcode Font in Excel (Installation and Application)

Basically, a barcode is a bunch of lines and spaces that represent some machine-readable information. From grocery store products to confidential information, ...

How to Calculate Federal Tax Rate in Excel (with Easy Steps)

U.S. government revenue comes primarily from the federal income tax. As a result of federal income tax revenues, a variety of expenses are met, including the ...

How to Calculate Average Salary in Excel (6 Effective Methods)

A common task in business and in everyday life is calculating the average salary. Excel makes calculating the average salary easy. Excel has a variety of ...

How to Consolidate Rows and Sum Data in Excel?

It may be easy to find multiple duplicate rows in the data when analyzing it in Excel. In such a situation, maybe you should quickly consolidate the rows and ...

How to Remove Grouping in Excel – 2 Suitable Examples

Example 1 - Remove Grouping from a Group of Rows The following dataset showcases manual grouping. 1.1 All Grouped Rows Steps: Go to the Data ...

How to Add Asterisk in Excel Graph (2 Handy Ways)

To indicate statistical significance, or to show differences between data sets on graphs, Excel should have the option to add asterisks to graphs like bar ...

Debit Credit Balance Sheet with Excel Formula (3 Suitable Examples)

Maintaining a debit credit balance sheet of your checking and credit accounts is one of the most essential chores in personal finance. The ancients may have ...

How to Extract Comments from Word Document into Excel

Step 1: Open Word Document Each cell of the Name column contains comments on the employee. Step 2: Create Comments If you put your cursor ...

How to Calculate Log Base 2 in Excel (2 Methods)

  Method 1 - Use Excel LOG Function The LOG function computes the logarithm of a number to a particular base. In order to use the LOG function, ...

Excel Macro to Save as PDF (5 Suitable Examples)

PDF is a very common file format for documents. In Excel 2010 and later, you can export a workbook, a sheet or group of selected worksheets, or a range as a ...

How to Highlight with Cursor in Excel: 3 Suitable Methods

Method 1 - Use Conditional Formatting to Highlight Active Row and Column Steps: Select the entire dataset which you want to highlight. Go to the Home ...

How to Add Individual Error Bars in Excel (with Easy Steps)

Though many of us are not comfortable with uncertainty due to its lack of data, uncertainty is a good thing to prepare the company for the future, create ...

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Advanced Excel Exercises with Solutions PDF