CSV ⇄ Excel Converter
Free bidirectional CSV ⇄ Excel converter. Turn CSVs into proper .xlsx workbooks or export the first sheet of any Excel file back to clean CSV. Runs entirely in your browser.
Runs in your browserUpdated Apr 26, 2026
Input
Drop a file or click to browse
First sheet only
Up to 10 MB · processed locally in your browser
Result
CSV will appear here.
Frequently asked questions
›What delimiters are detected?
Comma (default), tab, semicolon and pipe. Auto-detected from the first line of your file.
›Are headers required?
Optional — but if your first row is headers, they become the Excel column headers (and we offer to bold them).
›Are my files uploaded?
No — conversion happens entirely in your browser via SheetJS.
›Can I convert multiple CSVs to one Excel with multiple sheets?
Currently one CSV → one sheet. Multi-sheet output is on the roadmap.
›Is the converter free?
Yes — fully free, no signup.