Step by Step: Convert XLS to XLSX

People want to convert XLS to XLSX because now a days 90% people are using a newer version but few of them still uses an older version so when they got a file from their boss, employees or team members, they caught difficulty in its opening and cannot open that file unless they convert it to a newer version. So if you are also one of those who are stuck with such problem then must go through below solutions because Yes! Now converting XLS to XLSX is no more difficult.

Solution 1: Convert XLS to XLSX in Excel

As we all know when MS Office 2007 launches, Microsoft changes the file extension to .XLSX. The new file format comes up with lot of benefits like the size of file is very smaller and plays an important role in better data integration.

Follow below steps if you want to convert XLS to XLSX online.

  • Step 1: In the very first step simply open the file that you want to convert in Excel
  • Step 2: In the 2nd step you need to choose the round Office Button.
  • Step 3: After click Office Button a file menu will open.
  • Step 4: Now choose Save As.
  • Step 6: Now you need to choose the Excel Workbook from menu.
  • Step 7: After choosing, select the output Folder where you want to be saved the converted file.

Solution 2: XLS to XLSX Converter Online

The benefit of using this XLS to XLSX converter online is that it supports almost 200 formats. It requires very small time and in 2 to 3 steps you get your results. Use this Converter by going to: Online Converter

  • Step 1: First you need to select the file that you want to convert; you can select it from Google Drive, Dropbox or by URL. Even you can drag your file into it.
  • Step 2: Now choose the format that you want as a output.
  • Step 3: Now let the file convert and download it to your desired location.


Solution 3: Advanced XLS to XLSX Converter

As we all know that with Excel we can convert XLS to XLSX but the drawback of converting file in Excel is that it let you convert one document per time. It is really bad and waste of time when it comes to convert many document at once. So Advanced XLS to XLSX Converter is for those who have hundreds of documents and want to convert it.

  • Step 1: First you need to download and launch: Advanced XLS to XLSX Converter.
  • Step 2: Now you need to Open the file that you want to convert.

  • Step 3: If you have hundreds of file then you can specify a folder where all files exist. The software will convert all of them.
  • Step 4: Now the software will read the source XLS and will show you a preview there you can apply custom filters.


After adjusting the data source according to your choice simply hit Finish. Finally all the files are converted. Another benefit of using this tool is that the process is 100% accurate and fast.

Additional Tips: How to Restore Forgotten Excel Workbook Password

We highly recommend PassFab for Excel for opening a protected Excel file. It let you not only recover the password but you can remove it too. It is better than other recovery software’s because of its compatibility, accuracy and speed. Experts tested it many times and find out a zero error. If you want to unlock your Excel file then follow below steps.

Step 1: First you need to download and install PassFab for Excel from official website.

Step 2: After launching you can see a below screen, click "Recover Excel Open Password" feature.

passfab for excel

Step 3: Select "Please Import Excel File" in order to add locked file.


Step 4: Now it’s time to choose appropriate password recovery mode. You will be able to see 3 Modes: Dictionary Attack, Brute Force with Mask Attack and Brute Force Attack.


Step 5: Hit Recover button; recovery process is started, password will be recovered soon.


Still have no idea about how to use it? Well, you might as well watching this video about it.

In A Netshell

Now you have got to know about conversion of XLS to XLSX online. We have shared variety of solutions but the best one is Advanced XLS to XLSX Converter because it let you convert multiple files at once. We have shared very helpful software PassFab for Excel for those who want to unlock password-protected Excel spreadsheet. This is the best one than other common recovery programs. If you like the article then makes sure to share it to others.

Updated on / Posted by Shirley Howard to Excel Tips / Follow @Shirley Howard


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