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

Related Spreadsheets Conversion Tools

Need to convert other formats? Try these popular free online tools.

.xlsx.csv
XLSX to CSV
.tsv.csv
TSV to CSV
FAQ

Frequently Asked Questions

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