Microsoft Office Without Paying: Free Alternatives Compared by How Well They Open Your Word and Excel Files

Replacements for Microsoft Office can be used at no cost. Your selection of an office suite will dictate whether your Word and Excel documents will maintain the same appearance when they go back to your professor, customer, or supervisor. Each of the many alternatives available for free will read Microsoft’s .docx and .xlsx file formats in a different way, therefore what remains the same will depend on how the files were constructed, instead of which suite you chose based on advertising. Simple documents like essays, resumes, and basic budgets generally will transfer without issues. The differences in the flow of the documents will appear when you look at complex templated documents, reference materials, and spreadsheets that use automated features.

All of the office suites treat the document files in a different manner. OnlyOffice claims to be able to edit Microsoft format files directly. LibreOffice saves and opens Microsoft format file types in a separate OpenDocument format. Google Docs and Microsoft’s free version of Word and Excel both run through a web browser. None of this provides information regarding which open-source or free office suite will provide the safest return of your document file. A better understanding of the document file’s contents and formatting should give you a better idea of whether your original document file will stay intact.

Why Your Word and Excel Files Change When You Open Them in a Free Suite

A .docx or .xlsx file is essentially a set of commands: this title has this look, this area is located here, this cell computes with this formula; Microsoft refers to this as the Office Open XML (OOXML) file structure. There are different software programs which can interpret the commands in the OOXML file structure, but they all will display the data in their own specific ways. The act of opening a file in one program, making changes to it, and then saving it again in the same format is referred to as a “round-trip” and as soon as you do this, the slight differences in how the OOXML file’s commands have been interpreted become permanent and cannot be reversed.

The suites don’t read the file the same way. OnlyOffice says it dropped its temporary internal formats in 2013 and moved to native OOXML editing “without any intermediate conversion.” That’s the vendor’s own description. LibreOffice’s home format is OpenDocument. Its help pages describe Microsoft formats as ones it can open and save, and they include a wizard for converting whole folders into OpenDocument. Google’s help centre states the risk plainly. When you edit an Office file in Google Docs, some features are hidden but kept, while others may be lost or altered, and a notification appears when that’s about to happen.

The files that cause issues depend on the contents of those files, and the WPS has published a file-by-file risk list for each type of file. While it is a vendor-supplied list, it does provide useful information about what to avoid and what to look for when working with Word files, such as: Plain text formatting, simple table formats, and basic headers are considered low risk; while complex section breaks, automatic tables of contents, cross references, mail merge, embedded objects, and Office-only fonts that will be replaced with similar-looking fonts, are flagged as high-risk. The highest-risk items for Excel are: VBA macros; Power Query; External Data Connections; Pivot Tables populated by data derived from outside sources; Add-ins; and complex array formulas. For PowerPoint, the highest-risk items are: complex animations; embedded audio and video; and SmartArt.

For example, a user on Reddit who is studying at an academic level in LibreOffice, has experienced compatibility problems with Zotero reference citations. A bug report submitted to LibreOffice describes how, in a heavily formatted document, text boxes overlapping have a tendency to overlap one another; however, neither report indicates how often this is the case, or provides clarity that the two status updates: “It opened” and “It retained everything”, are actually two independent inquiries.

How We Tested (and What “Compatible” Actually Means)

While it may appear that this data was solely obtained from individual laboratory sessions, a significant influence has come from both vendor documentation and the free online tools offered by Microsoft and Google, as well as individual experiences from those who have migrated to the new software, which includes public bug reports; each of these has been referenced at the point where it was used in this report. The four tests mentioned below represent the minimum number you will want to conduct on your own document, as only the documents you own are of significance.

In this article, a suite counts as “compatible” with a file only if it passes all four checks:

1. It opens cleanly. No error, no blank screen, no missing pages.
2. It looks the same. Fonts, spacing, page breaks, tables and images sit where Word or Excel put them.
3. It still works. Formulas calculate, tables of contents update, and charts reflect the data.
4. It survives the trip back. After saving back to .docx or .xlsx, the file opens in Microsoft Office without new damage.

The fourth test has been omitted by many; however, should the document return to anyone who edits in Microsoft Word, they could run into problems as a result of not having conducted the fourth test.

Suite-by-Suite: What Happens to Your Files in Each Free Office Alternative

LibreOffice

LibreOffice is the default suggestion for good reason. It’s free, it installs on your computer, and it runs on modest hardware. On Windows 10 or 11, the official requirements are 256 MB of RAM (512 MB recommended) and up to 1.5 GB of disk space. It also runs on macOS 11 or newer and on Linux. The current stable release on the download page is LibreOffice 26.8. A volunteer answering on Microsoft’s own community forum called it a free option with pretty good Office compatibility.

Macros are where the LibreOffice vs Microsoft Office gap is widest. LibreOffice’s help says that, with a few exceptions, the two can’t run the same macro code. It also says that if you edit only the normal content and save back to a Microsoft format, the VBA macros will still run in Office afterwards. You can switch on partial VBA support, but LibreOffice describes it as not complete and says you may need to edit the code. Older files are worth checking too: one bug report describes a 2003-era .xls file opening blank with no error message.

OnlyOffice

OnlyOffice Desktop Editors is another viable option if you are looking for an office productivity suite that is open-source, free to use, and does not require an internet connection to operate. The development team for OnlyOffice claims that their product is fully compatible with Microsoft .docx, .xlsx and .pptx formats. Considering that this is the vendor’s statement and not an independent evaluation, I recommend looking at the actual performance yourself. One user on Reddit states: if you need true compatibility with MS Office Products, check out OnlyOffice.

Two factors have to be addressed before you can start using WPS to replace Microsoft Office; the macros that are in WPS Office will only be opened in WPS on the Windows operating system and are not compatible with Microsoft Office without converting them; and that WPS Office has higher demands on your computer to use it than the Microsoft Office Suite. You need a dual-core processor with a minimum speed of 2.0GHz, a minimum of 2.0GB of RAM, and a minimum of 2.0GB of available hard disk space. These specifications are for the simplest files.

WPS Office

The WPS Office Suite works better than the other two WPS Office Suites listed. According to the WPS Office website, the free version of WPS Office will work with and allow users to edit, save, and create common Microsoft Office file types (Word, Excel, PowerPoint, etc.) using Microsoft Windows, Mac, Linux, Android, or iOS. The WPS website advises users to test their files before switching over to WPS Office for any complex files and indicates that WPS doesn’t support VBA, which is used to create and manage macros in Microsoft Excel. Users of WPS can continue to work with the data contained in these Excel files but will not be able to use the macros that were in the Excel file.

The bigger question with WPS Office free is what “free” currently means. WPS’s own blog confirms that the free version shows ads, and that on Android the only official way to remove them is paying for Premium. In a November 2025 Reddit thread, the original poster said WPS was now asking them to upgrade before they could do anything. Other commenters described editing tools locking and saving being blocked. One commenter said it was still free. Those are individual reports, not proof about every install, but they’re reason enough to check before you rely on it.

Google Docs

Google Docs vs Word is less of a straight swap than people expect. The good news is that you can upload a Word or Excel file and edit it directly, with changes saved in the original Office format. Converting to a Google Doc is optional and makes a separate copy. That covers .doc, .docx, .xls, .xlsx, macro-enabled .xlsm and PowerPoint files.

Like all other Google applications, there are still limitations to what Google Docs can do as far as file types. For example, all password-protected documents are opened in view only mode and must be edited as a PDF document. If you have a document created prior to 2007, that document will automatically be saved in a newer version of Microsoft Word. You must be mindful of any major changes you made to the file when saving it again in its original format, as many features of the original document may be lost or changed during the editing process. If you have very large documents that exceed Google Docs limits, they will not save back to the original file format. Google Docs is an excellent choice if you want to collaborate with others to share or edit your files. However, it’s an online application, so you must have internet access unless you have previously set up offline access in your account.

SoftMaker FreeOffice

FreeOffice is probably one of the least talked about or considered alternatives to Microsoft Office. It’s a product from SoftMaker, and they claim it’s free for personal and business use on Windows, Mac, and Linux. FreeOffice allows users to use either the ribbon layout or classic menu formats. In addition to word processing, FreeOffice also features a spreadsheet application with over 430 built-in functions. According to SoftMaker, FreeOffice is “seamlessly compatible” with Microsoft Word, Microsoft Excel, and Microsoft PowerPoint, although this is an assertion made by the vendor. One user on Reddit claims that 90% of users do just fine with FreeOffice, but this is not a statistically verified claim; it’s simply the opinion of a single individual user.

Microsoft 365 for the web

A free web app version of Microsoft Word, Excel and Powerpoint is available to users at no cost. The list of benefits for these users includes only being able to access web versions only of each application and 5GB of OneDrive data storage. As a free user you’ll receive security updates but will not be eligible to use any new features or receive any technical assistance from Microsoft. You’ll also be unable to create, run, or edit VBA macros in Excel for the web; however, you can open a workbook that includes a VBA macro, but you won’t be able to do anything else with it. With respect to Word for the web, any document that has been password-protected can only be opened in read-only format. Additionally, since this product is built on Microsoft’s own engine, Word for the web is the most straightforward way to perform quick file edits that are going back to other Word users. However, it must be noted that you will be limited to working in a web browser and that your cloud-based data storage will be limited.

Free Office Suites Compared: Which One Opens Your Files Best?

The findings are summarized in this table; cells in the table were populated from the sources listed under the Suite-by-suite section, thus consult each source for detailed wording.

Nothing stands out in terms of suites across the board, but rather a clear division, suggesting that if you require an installation on your computer that can function off-line then your selection would be either OnlyOffice, LibreOffice, or FreeOffice. OnlyOffice offers a direct editing feature enabling it to claim most strongly to the ability of editing complex Microsoft Files, whilst LibreOffice is a very good light installation option for older generation computers. If you wish your files to retain the format and appearance in which Microsoft created them, but wish to work off-line through a browser, then the most suitable option is to use Microsoft’s free suite web apps which removes any translation issues. Although WPS provides compatibility, this is the least reliable part of this comparison due to changes made to WPS’s free tier after 2013.

When You Still Need Microsoft Office (and No Free Suite Will Do)

There are a few situations where you would want to store your documents using Microsoft’s suite of applications. Taken together, the documentation above suggests these are the cases where a free suite is more likely to cost you time than save money:

• Excel files that run on VBA macros. LibreOffice’s support is incomplete, OnlyOffice and WPS can’t run VBA as it is, and Excel for the web can’t run macros at all. Opening the file to read the numbers is fine. Relying on the automation isn’t.
• Workbooks that pull live data through Power Query or external connections. WPS lists these as things that won’t run directly outside Excel, together with add-ins and pivot tables that depend on outside data.
• Heavily designed Word templates. University or company templates full of text boxes, section-specific headers, cross-references or reference-manager citations fall into the categories flagged above and in the bug reports.
• Documents you’ll pass back and forth with Word users who won’t accept any layout change. WPS’s own guide lists this as a reason to keep Office for those particular files.
• Presentations built on advanced PowerPoint animations such as Morph transitions or 3D models, which WPS warns may be downgraded or dropped.

In those situations, a subscription from Microsoft 365 would seem to be the most logical choice, especially if you are a student or working for an employer that already provides Microsoft 365. WPS has recommended using Microsoft 365 via your school or employer if you have the ability to do so. This makes sense. Take advantage of Office or its online version if you have only a couple file types that require it. For anything else, use a free productivity suite.

Which Free Office Suite Should You Actually Use?

The recommendations listed below are based on conclusions drawn from the research conducted, not based on what an individual research source ranked compared to another source. Match them to the files you actually handle:

• You mainly write essays, letters and CVs, and your laptop is older or low on memory. LibreOffice is the lightest full desktop suite here, and FreeOffice is worth trying if you prefer a ribbon layout like Word’s.
• You receive complex .docx and .xlsx files from a school, client or employer and send them back. OnlyOffice is the strongest candidate as long as your computer meets its 2 GB RAM requirement. Still run the four checks on a real file first.
• You co-edit with classmates or colleagues and are usually online. Google Docs, which edits the Office file in place, is the natural free word processor for shared work.
• You only occasionally need to make a quick edit to a file that must stay exactly as Word made it. Microsoft’s free web apps avoid any translation, provided the file isn’t password-protected and doesn’t depend on macros.
• Your spreadsheets depend on macros or live data connections. Keep Microsoft Office for those files.

While considering Windows-compatible, fully offline working, free office suites (Forever Free!), you will be left with LibreOffice, OnlyOffice and FreeOffice. While we have evidence to include WPS on this list of Free Office Suites, only include it as a viable option after you confirm that your version can still edit and save documents without having to pay for upgrades or other features.

Before You Commit: Install, Test, and Check Your Real Files

If you verify the reliability of switching before utilizing it, you can minimize your risks when switching. Also, if you use a new program suite and you do not realize that you have overwritten an important document’s original, you run the risk of losing the layout that was saved with it.

1. Download from the official site only. Use the LibreOffice download page, OnlyOffice’s desktop download page, freeoffice.com or WPS’s official download centre. WPS itself advises against third-party download sites, and that applies to any free office software download.
2. Copy your three hardest files. Choose your most complex Word document, your most formula-heavy spreadsheet and your most animated presentation. WPS’s guide suggests exactly this three-file test. Work only on the copies.
3. Open each copy and compare it with the original. Look at page breaks, headers, tables of contents, fonts, formula results and chart data.
4. Save back to .docx, .xlsx or .pptx, then reopen. Ideally, reopen it in Microsoft Office or the free web version so you see what the recipient will see.
5. If you choose LibreOffice, set Microsoft formats as the default. Its help explains how to pick the default save format for each document type in the Load/Save – General options, so files don’t quietly save as OpenDocument.

If you’ve found your suite when all three documents pass, if not, you will know which file types will be retained in Microsoft’s suite.

The Bottom Line

While free software suites support the regular use of Microsoft Word documents and Excel spreadsheets, they struggle with advanced functionality such as macros, live data connections, and highly formatted templates. To help ensure compatibility, be sure to create and save copies of your three most complex documents when switching to your new suite. Otherwise, you may not know there’s an issue until someone else receives an email you’ve created with an incorrect layout.

Frequently Asked Questions

Is it legal to use Microsoft Word and Excel for free?

Microsoft provides free web-based [free web versions] of Word, Excel, and PowerPoint applications for consumers with a Microsoft Account, along with 5GB of OneDrive storage space; however, installed versions of Word, Excel, and PowerPoint require a paid subscription or license.

Will LibreOffice delete the macros in my Excel file?

If you do nothing to them, then LibreOffice doesn’t modify those files. According to the documentation for LibreOffice, if you edit only the content and then save to a Microsoft format, VBA macros within the document will operate correctly in Microsoft Office after editing it. Also, you can remove macros from documents when they are opened or saved.

Does Google Docs turn my Word file into a Google Doc?

If you decide to convert your document, Office Editing saves changes in the original format. Converting the document creates a new copy. Therefore, password-protected documents can only be opened in read-only mode.

Which free suite suits an old laptop with little memory?

The minimum RAM that LibreOffice requires is 256MB, while the recommended amount is 512MB and it requires up to 1.5GB of disk space to install on Windows. The minimum RAM both LibreOffice and OnlyOffice require is 2GB and both state that their minimum RAM requirements apply to the simplest file types in both applications.