Free CSV to Excel Converter
Free CSV to Excel converter. Upload a CSV and download a clean .xlsx file instantly. Nothing uploaded.
Free Spreadsheet Tool
CSV to Excel.
Convert to .xlsx. Free. Instant.
Convert any CSV file to a properly formatted Excel .xlsx file instantly. Nothing uploaded — processed in your browser.
No sign-up100% freeFiles never uploadedWorks on iPhone
CSV to Excel Converter
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Drop your file here
or click to browse
CSV files only · Max 20MB · Never uploaded
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Processing...0%
Something went wrong. Please try a different file.
✅
Done!
Your file is ready
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100% private
Processed in your browser only
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Instant
No waiting, no queue, no server
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Auto deleted
Wiped from memory on download
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Works everywhere
iPhone, Android, any browser
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More from Kaeltripton — UK Finance Guides
Free CSV to Excel Converter
Convert any CSV file into a properly formatted Excel .xlsx file instantly using SheetJS in your browser — no upload, no account required.
Frequently asked questions
Is this free?+
Yes — 100% free, no sign-up.
Are my files safe?+
Processed locally in your browser using SheetJS. Nothing is uploaded.
Does it work on iPhone?+
Yes — all modern browsers.
