CSV to Excel
Paste or open CSV/TSV data and download a proper Excel .xlsx file with numbers, filters and column widths.
About CSV to Excel
Convert CSV to Excel online and get a proper .xlsx file instead of a plain text file that opens with jumbled columns. Paste CSV data or open a .csv or .tsv file, check the delimiter and header options in the preview, name the sheet and download. Numbers are stored as numbers, filters are added and column widths are set to fit.
It is handy for bank statement exports, reports from web apps and data copied from websites. Tab-separated data works too, so this also acts as a TSV to Excel converter. Everything runs in your browser and nothing is uploaded, and it is free with no sign-up.
How to use CSV to Excel
- Paste CSV data or open a .csv / .tsv file.
- Check the delimiter and header options in the preview.
- Name the sheet and click Download Excel.
Frequently asked questions
Are my files uploaded anywhere?
No. The file is opened and processed entirely inside your browser using JavaScript libraries. Nothing is sent to a server, so it is safe for confidential documents.
Are numbers stored as numbers?
Yes. Plain numbers become real Excel numbers you can sum. Values with leading zeros (PIN codes, phone numbers, IDs like 00123) stay as text so the zeros are not lost.
Why is the header not bold?
The free spreadsheet engine used here cannot write cell styles. The header row gets an AutoFilter instead, so you can sort and filter immediately.
How do I convert a CSV file to XLSX?
Open or paste the CSV, confirm the delimiter and header row in the preview, and click Download Excel to get an .xlsx file.
Why do my CSV columns open in one cell in Excel?
Excel sometimes guesses the wrong separator. Converting here detects the delimiter and writes a real .xlsx file, so every value lands in its own column.
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