Convertor

Documents converter

CSV to XLSX

Convert a CSV file into a real Excel (.xlsx) workbook — ready to open and share.

Runs in your browser
CSV, TSVXLSX100% local · no upload

Drop your csv here, or browse

Up to 50 MB · .csv, .tsv

Runs 100% in your browser — your file is never uploaded.

Guide

How to convert csv to xlsx

  1. Pick your CSV file

    Select a .csv (or .tsv) file up to 50 MB.

  2. Convert to XLSX

    The rows are written into a real Excel workbook, with proper column splitting.

  3. Download the XLSX

    Open it in Excel, WPS or Google Sheets — no import wizard needed.

Format details

Input formats
CSV, TSV
Output format
XLSX
Privacy
No upload · processed locally

Frequently asked questions

Why convert CSV to XLSX?

Excel opens CSVs but often mangles delimiters or encodings depending on locale. A real .xlsx opens correctly everywhere and supports styling later.

Which delimiters are recognized?

Comma, semicolon and tab are auto-detected — including the semicolon CSVs common in European Excel.

Will special characters survive?

Yes — UTF-8 text (accents, CJK and more) is carried into the workbook unchanged.

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