Convert XLSX to CSV online, free
Excel vers CSV — processed on our secure servers in France. Files deleted after conversion, no sign-up.
Drop your XLSX file here
or click to choose a file — conversion to CSV
XLSX vs CSV — technical comparison
Frequently asked questions
How to convert XLSX to CSV?+
Drop your XLSX file in the zone above, or click to select it. The CSV conversion starts automatically on our secure servers — no software to install.
Is converting XLSX to CSV secure?+
Yes. ConvertLab processes your files on secure servers located in France, over an encrypted connection. They are never shared with any third party and are deleted immediately after the conversion.
Is there quality loss when converting XLSX to CSV?+
Quality depends on the conversion settings. ConvertLab lets you adjust quality before starting.
What is the maximum file size?+
Since the conversion runs on our servers, the limit no longer depends on your device. Files up to 100 MB are accepted. With NoLimit, up to 1 GB per file (250 MB for video).