Free & Instant

Convert CSV to Excel XLSX Online — Free & Fast

Transform CSV files to Excel XLSX format.

Upload your file

Drag & drop your .csv file here, or browse
Multiple files supported

.CSV.XLSX

Maximum file size: 500 MB · Multiple files supported

100% private — files are processed in your browser, never uploaded

How It Works

CSV to XLSX in 4 Easy Steps

Convert CSV to XLSX in seconds — no sign-up, no upload, no catch.

  1. 1

    Upload CSV file

    Drop your .csv file or click Browse.

  2. 2

    XLSX auto-selected

    XLSX is pre-selected as the output.

  3. 3

    Convert locally

    Your CSV is parsed and exported as a proper Excel file.

  4. 4

    Download XLSX

    Open in Microsoft Excel or Google Sheets.

Use Cases

Why convert CSV to XLSX?

  • Convert data exports for Excel users
  • Create shareable spreadsheet files
  • Add formatting to CSV data
FAQ

Frequently Asked Questions

Each CSV upload creates a single-sheet XLSX. For multiple sheets, use the spreadsheet merge tool.