Convert CSV to Excel — fast XLSX conversion in your browser

Turn CSV exports into Excel spreadsheets for analysis and sharing. Works with comma- and semicolon-separated files and keeps your data private with local processing.

CSV to Excel Converter

How it works

This tool reads your CSV locally, parses rows and columns, and then generates an Excel (.xlsx) file using SheetJS. It works well for exports from databases, portals, and reporting systems, including Italian datasets that often use semicolon delimiters.

  • Use Auto-detect first; switch delimiter if columns look wrong.
  • Large CSV files can take longer to parse — consider filtering rows before converting.
  • Your data stays in the browser. No upload is required.

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FAQ

CSV files contain values only (no formulas). The Excel file will contain the same values and columns from the CSV.

No. Conversion happens in your browser.

Select the semicolon delimiter (;), which is common for European exports.

Explore related tools and guides

Use these internal links to complete your workflow faster (compress, convert, merge, split) and follow the most relevant guides.

Compress PDF

Reduce PDF size for portals, email and uploads.

Split PDF

Extract ranges or split large PDFs into smaller parts.

Rotate PDF

Fix sideways pages for submissions and printing.

Reorder PDF

Re-arrange pages before you upload or sign.

Delete PDF Pages

Remove unwanted pages to cut size and clutter.

JPG to PDF

Convert images into a single shareable PDF.

How to Compress PDF

Step-by-step PDF compression workflow.

CSV to Excel Guide

Avoid broken columns and lost zeros.

CSV to Excel: Convert CSV Files to XLSX Format

CSV files from databases, exports, and data tools need to be opened in Excel for analysis, presentation, and sharing with non-technical colleagues. This converter turns any CSV into a properly structured .xlsx Excel file — in your browser with no server upload.

How to convert CSV to Excel

  1. Upload your CSV file.
  2. Click Convert to Excel.
  3. Download the XLSX file and open in Microsoft Excel or LibreOffice Calc.

Common use cases

Frequently asked questions

Will column widths and formatting be applied?
Basic column structure is preserved. Cell formatting (colours, fonts, borders) is not present in CSV and therefore cannot be carried over — you apply formatting in Excel after conversion.
What delimiter does the converter expect?
Standard commas are used by default. If your file uses semicolons or tabs as delimiters, the tool attempts to detect this automatically.
Is my data kept private?
Yes. Processing happens entirely in your browser — your data is never sent to our servers.

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