File converter  /  Documents  /  Convert to NUMBERS  /  XLSX converter  /  NUMBERS to XLSX

Convert NUMBERS to XLSX

You can effortlessly convert your numbers file to xlsx, along with a multitude of other formats, using our complimentary online converter.

How to convert numbers to xlsx?

Step 1

Upload an numbers-file

You can select the numbers file you wish to convert from your computer, Google Drive, Dropbox or just drag and drop it onto the page.
Step 2

Select "to xlsx"

Choose xlsx or any other of the 200+ supported formats that you wish to convert to.
Step 3

Download your xlsx file

Please wait for the conversion to be completed, then click on the download button to get your converted file in the xlsx format.

The security of your files is our priority

Recognizing the crucial significance of our users' data security, we have put a number of measures in place to guarantee reliable file conversion without the jeopardy of information leakage or privacy infringements.

Data Encryption

Every piece of information uploaded to our platform undergoes SSL encryption, safeguarding privacy during the transmission process.

Secure Storage

Upon completion of the conversion, the files are retained on secure servers for a duration of 24 hours and are then automatically obliterated, preventing any third-party access.

Safe Scripting

We regularly screen our file conversion tools for any malicious code or vulnerabilities, mitigating the risk of potential cyber threats.

Best tool to convert numbers to xlsx

Converting numbers to xlsx is fast and easy

Just drag and drop your numbers files onto the webpage, and you'll have the capability to convert them to xlsx or over 250 different file formats, all without the need to register, provide an email address, or include a watermark.

Safe numbers to xlsx Conversion

Immediately upon uploading your numbers files, we delete them without delay. Converted files are then removed after 24 hours. Additionally, we ensure that all file transfers are secure through advanced SSL encryption.

No Software Installation Required

There's no need to go through the inconvenience of installing any software. We conveniently handle all numbers to xlsx conversions in the cloud, which implies that none of your computer's resources will be consumed in the process.

Numbers Spreadsheet File

Extension.numbers
Category🔵 documents
Programs
🔵 Apple Numbers
Main program🔵 Apple iWork
Description🔵 If you’re a Mac user, you’ve likely been held hostage by the .numbers format at some point. It’s Apple’s proprietary spin on the spreadsheet, and it’s built on a completely different philosophy than the rigid grids of Excel. While it handles the usual heavy lifting—formulas, pivot tables, and the like—Numbers treats the workspace like a blank canvas. The catch? It’s a textbook 'walled garden.' Because the format is so deeply tied to Apple's ecosystem, you can't just toss a .numbers file over to someone on Windows and expect Excel or LibreOffice to have a clue what to do with it.
Technical details🔵 Technically speaking, a .numbers file is a bit of a lie—it's not a single file at all, but a compressed folder masquerading as one. If you were to crack the archive open, you’d find a chaotic 'zoo' of data: proprietary .iwa blobs for the core logic, a bunch of .plist files for settings, and even JPEG thumbnails so the macOS Finder can show you a preview without actually opening the app.
This 'package' architecture is exactly why it’s such a headache for cross-platform workflows. Instead of using a predictable XML structure that other software can parse, Apple uses its own internal logic for storing objects and metadata. It’s great for seamless syncing between an iPad and a MacBook via iCloud, but it makes the format totally 'illiterate' to anything else. In short: Numbers lives in its own world, and if you aren't using an Apple device, you’re basically locked out unless someone hits 'Export.'
Developer🔵 Apple
MIME type
🔵 application/x-iwork-numbers-sffnumbers
🔵 application/vnd.apple.numbers

Office Open XML Document

Extension.xlsx
Category🔵 documents
Programs
🔵 Microsoft Office
🔵 LibreOffice
🔵 Kingsoft Office
🔵 Google Docs
Main program🔵 Microsoft Office
Description🔵 The .xlsx format came out with Excel 2007 as part of the Office Open XML (OOXML) standard and is way better than the old .xls format. It uses XML inside a ZIP file, which makes it simpler to read data and arrange stuff like worksheets.
This format can handle a lot of data – over a million rows and 16,384 columns in each sheet, so it’s great for big sets of data. It also has cool things like formulas, charts, pivot tables, and VBA macros. Since it uses XML files, the file sizes stay pretty small.
Technical details🔵 The .xlsx format works well on different systems, has security stuff like digital signatures and encryption, and even a version (.xlsm) that supports macros for creating detailed documents.
Since Excel 2007, the format .xlsx has become the standard for spreadsheets in Microsoft Excel. It is based on Office Open XML and uses XML and ZIP to reduce the file size. Files.xlsx allows you to create complex tables with data, formulas, graphs, and any design. You can even make pivot tables. It's got better security and works faster than .xls, so lots of people use it for business, school, and keeping their personal data straight.
Developer🔵 Microsoft
MIME type
🔵 application/vnd.openxmlformats-officedocument.spreadsheetml.sheet