XLSX Converter
Free online XLSX converter. Convert xlsx files to and from other formats in seconds — no software install, no watermark, no sign-up required.
Pick the exact conversion you need below
Every XLSX conversion has its own dedicated, free tool — scroll down and choose one.
About XLSX Converter
XLSX (Microsoft Excel Workbook) is the modern Microsoft Excel spreadsheet format. This free xlsx converter lets you change XLSX files into other formats — and convert other files into XLSX — quickly, privately and without installing anything.
How to use XLSX Converter
Upload your file by dragging it into the box above or clicking to browse — files up to 100MB are supported.
The XLSX conversion starts automatically and runs securely in your browser, so your files never leave your device.
Preview the result, then click Download to save the converted file.
Convert XLSX to…
Convert to XLSX from…
What is a XLSX file?
XLSX stands for Microsoft Excel Workbook. It is the modern Microsoft Excel spreadsheet format. Knowing when to keep a file as XLSX and when to convert it makes a real difference: every format has its own balance of quality, file size and compatibility.
If an app or website won't accept your xlsx file, converting it is the fastest fix — and this free xlsx converter does it in seconds, with no software to install and no watermark on the result.
Convert XLSX files free, fast and private
Pick any conversion below — every one is free, works on phones and computers, and never uploads your file to a server when the conversion can run in your browser. That means no queues, no size games and no privacy worries.
Frequently Asked Questions
What is a XLSX file?+
XLSX stands for Microsoft Excel Workbook. It is the modern Microsoft Excel spreadsheet format.
How do I convert a XLSX file?+
Upload your XLSX file, choose the format you want, and download the converted result — or pick a dedicated xlsx conversion below.
Is this xlsx converter free?+
Yes, completely free with no limits, watermarks or registration.
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