Excel / CSV Converter

CSV to XLSX supports custom delimiters and header handling; XLSX to CSV lets you export one sheet or every sheet as a ZIP. Preview the first 100 rows before converting.

Processed locally, never uploadedNo sign-upFree

Key features

CSV to XLSX with delimiter and header options
Export one sheet or all sheets as a ZIP
Preview the first 100 rows before converting

How to use

Open the page and start; no account required.
Enter text or choose a file, then press Ctrl / ⌘ + Enter to run.
Copy or download the result; everything runs locally in your browser.

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