Converting a Word document to PDF sounds like it should be simple. And honestly, it is – if you know the right tool. I spent the last two weeks testing every free method I could find, from built-in desktop options to online converters, and some of them are genuinely terrible. Broken formatting, missing fonts, weird page breaks. But a handful actually work well.
If you work with PDFs regularly, check out our roundup of the best free PDF editors – it covers editing, annotating, and more. This guide focuses specifically on the Word-to-PDF conversion part.
Quick Comparison: Best Free Word to PDF Converters
| Method | Platform | Offline? | File Size Limit | Batch Convert | Formatting Accuracy |
|---|---|---|---|---|---|
| Microsoft Word (Save As) | Windows, Mac | Yes | None | No | Best (native) |
| Google Docs | Web (any OS) | No | 50 MB upload | No | Good (minor shifts) |
| LibreOffice Writer | Windows, Mac, Linux | Yes | None | Yes (macro) | Very Good |
| ILovePDF | Web | No | 25 MB free | Yes (2 files free) | Very Good |
| PDF24 Tools | Web + Desktop | Both | None | Yes | Good |
| Smallpdf | Web | No | 5 MB free | No (free tier) | Very Good |
| macOS Pages/Preview | Mac only | Yes | None | No | Good |
1. Microsoft Word – Save As PDF (Best Formatting)
If you already have Word installed, this is the obvious choice. The conversion happens natively, so what you see on screen is exactly what ends up in the PDF. No font substitutions, no layout drift.
How to do it
Open your .docx file in Word. Go to File > Save As (or Export > Create PDF/XPS on Windows). Pick PDF from the format dropdown. Hit Save. That’s literally it.
On Mac, you can also use File > Print > Save as PDF from the print dialog, which works in any app, not just Word.
What I liked
Formatting is perfect every single time. Tables, headers, footers, page numbers, embedded images – everything stays exactly where it should. I converted a 47-page contract with complex tables and nested lists, and the PDF was pixel-identical to the Word version.
The catch
You need Microsoft Word, which isn’t free. Microsoft 365 starts at $6.99/month (Personal plan). The free web version at office.com does support PDF export, but it handles complex formatting worse than the desktop app. If you’re on a budget, keep reading.
2. Google Docs – Free and Works Everywhere
Google Docs is free, runs in any browser, and converts Word files to PDF without installing anything. For most people, this is the go-to method.
How to do it
Go to docs.google.com. Click the folder icon or drag your .docx file into the browser. Google Docs opens it automatically. Then File > Download > PDF Document (.pdf). Done in under 30 seconds.
For more Google Docs tips and alternatives, see our Google Docs alternatives guide.
What I liked
Zero cost, zero installation, works on Chromebooks and Linux where Word isn’t available. The conversion handles basic to medium-complexity documents well. I tested it with a 12-page report that had headers, footers, a table of contents, and inline images. Everything came through clean.
Where it struggles
Complex formatting takes hits. Specifically: custom fonts get substituted (Google uses its own font library), text boxes may shift position, and advanced table formatting like merged cells with precise widths can break. I had a document with a three-column layout using text boxes – the PDF output moved two of the boxes about half an inch to the right.
Not a dealbreaker for standard documents. But if your file has custom fonts or precise layout, test it before sending the PDF to anyone important.
3. LibreOffice Writer – Best Free Desktop Option
LibreOffice is the real free alternative to Microsoft Office. Writer, its word processor, opens .docx files and exports to PDF with pretty solid formatting accuracy. I’ve been using it on and off for about four years now.
How to do it
Download LibreOffice from libreoffice.org (free, open source, works on Windows/Mac/Linux). Open your Word file. Click File > Export as PDF. You get an options dialog where you can set image compression, PDF/A compliance, encryption, and more. Click Export.
What I liked
The PDF export options are surprisingly detailed. You can choose PDF/A-1b for archiving, set image DPI (I typically use 300 for print, 150 for web), add watermarks, restrict printing or copying, and even create tagged PDFs for accessibility. Microsoft Word’s free web version doesn’t give you half of this control.
Batch conversion is possible too. LibreOffice has a command-line mode:
libreoffice --headless --convert-to pdf *.docx
I converted 34 Word files in one shot. Took about 90 seconds total.
The downsides
Formatting accuracy is roughly 90-95% for complex documents. The main issues I hit: certain Microsoft-specific fonts (Calibri, Cambria) render slightly differently because LibreOffice uses metric-compatible alternatives. Paragraph spacing can shift by a point or two. Smart Art and some embedded charts lose styling.
For a standard business letter or report, you won’t notice any difference. For a heavily designed document with precise layout, check the output carefully.
4. ILovePDF – Best Online Converter
There are dozens of online Word-to-PDF converters, and honestly most of them are ad-infested garbage. ILovePDF is the exception. Clean interface, fast conversion, and the free tier is generous enough for regular use.
How to do it
Go to ilovepdf.com/word_to_pdf. Upload your .docx file (drag and drop works). Click “Convert to PDF.” Download the result. The whole process takes maybe 15 seconds for a typical document.
What I liked
Formatting accuracy is very good – better than Google Docs in my testing. I uploaded that same 47-page contract and the output was nearly identical to what Word produces. Fonts, tables, headers all correct. The free tier allows files up to 25 MB and lets you do two batch conversions at once.
The limits
Free users get a limited number of conversions per day (they don’t specify the exact number, but I hit the wall after about 15 files in one session). Premium is $7/month for unlimited use. Also, you’re uploading documents to their servers – fine for public documents, probably not ideal for confidential contracts or legal files. They say files are deleted after 2 hours, but still.
5. PDF24 Tools – Unlimited Free Conversions
PDF24 is a German company that makes a completely free PDF toolkit. No premium tier, no conversion limits, no file size caps. Their business model is based on their enterprise/business products, so the consumer tools are genuinely free.
How to do it
Online: go to tools.pdf24.org/en/word-to-pdf. Upload, convert, download. Desktop: install PDF24 Creator (Windows only), which adds a virtual printer. Print any document from any app and it becomes a PDF.
What I liked
No limits whatsoever on the free version. I converted 20+ files in a row without hitting any wall. The virtual printer approach on Windows is clever because it works with any application, not just Word. Formatting accuracy is good – not quite as precise as ILovePDF for complex documents, but perfectly fine for standard files.
They also offer a full PDF toolbox: merge, split, compress, rotate, add watermarks. All free. If you handle PDFs frequently, consider checking our best free PDF editors roundup for more options like this.
The fine print
The desktop app is Windows-only. The online version works everywhere but requires uploading to their servers (hosted in Germany, GDPR compliant). Interface looks a bit dated compared to ILovePDF or Smallpdf.
6. Smallpdf – Polished But Limited Free Tier
Smallpdf has arguably the nicest interface of any online PDF tool. Everything is smooth, fast, and intuitive. The catch is that the free tier got significantly more restrictive in 2025.
How to do it
Go to smallpdf.com/word-to-pdf. Drop your file in. It converts automatically. Download the PDF.
What I liked
The conversion quality is very good. Clean output, accurate formatting, fast processing. The interface is the best in this category – no clutter, no confusing options, just upload and convert.
The reality of the free tier
You get 2 free tasks per day. That’s it. Need to convert 3 files? Come back tomorrow or pay $12/month (billed annually) for Pro. The free file size limit is 5 MB, which is tight for image-heavy documents. A year ago they offered 7 free tasks per day, so the trend is going in the wrong direction.
Look, if you only need to convert one or two files occasionally, Smallpdf is fine. For anything more than that, ILovePDF or PDF24 are better free options.
7. macOS Built-in Tools (Mac Users Only)
If you’re on a Mac, you have two built-in options that require zero downloads.
Method A: Print to PDF (any app)
Open your Word file in any app (even TextEdit handles basic .docx files). Press Cmd+P to open the print dialog. Click the PDF dropdown in the bottom-left corner. Select Save as PDF. Choose your save location. Done.
This works from literally any macOS application. It’s the most universal method on Mac.
Method B: Pages export
Apple’s Pages app (free on every Mac) opens Word files. Go to File > Export To > PDF. You get options for image quality (Good, Better, Best). I tested all three: Good produces a 1.2 MB file from a 3 MB docx, Best produces about 2.8 MB. The visual difference is only noticeable if you zoom past 200%.
The trade-off
Pages handles formatting differently than Word. Custom headers and footers sometimes shift, and complex table borders may simplify. The Print-to-PDF method preserves formatting from whatever app rendered the document, so accuracy depends on which app you use to open the file.
For basic documents, both methods work great. For anything with precise layout requirements, use LibreOffice or the online converters instead.
Which Method Should You Pick?
Here’s my honest recommendation after testing all of these:
You have Microsoft Word installed: Use Word’s built-in export. Nothing beats native conversion accuracy.
You want free and offline: LibreOffice Writer. Best formatting fidelity of any free desktop option, plus batch conversion via command line.
You want free and online (no install): ILovePDF for the best balance of quality and free allowance. PDF24 if you need unlimited conversions. Google Docs if you already have your files there.
You’re on Mac: Cmd+P > Save as PDF works in any app and takes 5 seconds. Hard to beat for convenience.
You handle confidential documents: Only use offline methods (Word, LibreOffice, macOS Print-to-PDF). Don’t upload sensitive files to online converters regardless of their privacy policies.
Tips for Better Word-to-PDF Conversion
Embed your fonts
Before converting, go to Word > Options > Save and check “Embed fonts in the file.” This prevents font substitution in the PDF. The file size increases, but your fonts stay exactly right. This is especially important for documents using non-standard fonts.
Check your margins
The most common conversion issue I see is content getting cut off at page edges. Set your margins to at least 0.5 inches on all sides before converting. Some printers and PDF viewers add their own margins, so you want a buffer.
Use standard page sizes
Stick with Letter (8.5×11″) or A4. Custom page sizes occasionally cause issues in online converters, especially PDF24 and Google Docs. LibreOffice and Word handle custom sizes fine.
Flatten complex elements
If your document has SmartArt, charts, or complex shapes that break during conversion, try converting them to images first (right-click > Save as Picture in Word, then re-insert). It’s a workaround, not a fix, but it guarantees the visual output matches.
Need to go the other direction? We tested 8 tools for converting PDF back to Word – see our best free PDF to Word converters guide.
FAQ
Is it free to convert Word to PDF?
Yes. Multiple free methods exist. Google Docs, LibreOffice Writer, and PDF24 Tools all convert Word to PDF at no cost with no hidden limits. macOS also has built-in Print-to-PDF in every app. You don’t need to pay for Adobe Acrobat or any premium converter for basic Word-to-PDF conversion.
How do I convert Word to PDF without losing formatting?
Use Microsoft Word’s built-in “Save As PDF” or “Export to PDF” feature for the best formatting accuracy. If you don’t have Word, LibreOffice Writer is the most accurate free alternative. Before converting, embed your fonts (File > Options > Save > Embed fonts) to prevent font substitution issues.
Can I convert Word to PDF on my phone?
Yes. The free Microsoft Word app for iOS and Android lets you export documents as PDF. Google Docs mobile app does the same: open the file, tap the three-dot menu, select “Share and export,” then “Save as PDF.” On iPhone, you can also use the built-in print dialog: open the document, tap Share > Print, then pinch-to-zoom on the preview to create a PDF.
Is ILovePDF safe to use?
ILovePDF processes files on their servers and deletes them after 2 hours according to their privacy policy. The service is GDPR compliant and uses HTTPS encryption. For non-sensitive documents, it’s fine. For confidential contracts, legal documents, or files with personal data, use an offline converter like LibreOffice or Word’s built-in export instead.
What is the best free Word to PDF converter in 2026?
For offline use, LibreOffice Writer offers the best combination of formatting accuracy, batch processing, and zero cost. For online use, ILovePDF gives the best conversion quality with a reasonable free tier (25 MB file limit, multiple daily conversions). PDF24 Tools is the best option if you need unlimited free conversions without any restrictions.