Convert CSV to Excel
Convert CSV files to XLSX.
Añadir archivos CSV
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Máx 100 MB por archivo
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How do you convert a CSV file to Excel?
Docuboxer's CSV to Excel converter turns CSV files into XLSX spreadsheets directly in your browser, without uploading your data to any server. It auto-detects the file's delimiter — comma, semicolon or tab — and respects UTF-8 encoding, so accented names, special characters and currency symbols like € or £ arrive intact in the final Excel file. That solves the classic failure mode of opening a CSV directly in Excel: garbled characters, or every value crammed into a single column because Excel guessed the wrong separator for your locale. Because processing happens in your device's memory, you can convert exports containing sensitive data — customers, payroll, bank statements — without them leaving your machine, and the tool keeps working offline once the page has loaded. Free, no signup, and no need to have Excel installed to do the conversion.
How to use Convert CSV to Excel
- Load your CSV file by dragging it into the upload zone, or paste the CSV content directly into the text panel.
- The tool auto-detects the delimiter (comma, semicolon or tab); you can also set it manually and preview the data as a table.
- Generate and download the XLSX file with your data properly organized in rows and columns, accents and special characters intact.
Common use cases
Turn system exports into Excel reports
Convert CSV exports from CRMs, ERPs, e-commerce platforms and SQL databases into polished Excel files you can share with non-technical teams for analysis and presentation.
Handle semicolon-delimited CSVs
In locales where the comma is the decimal separator, CSVs often use semicolons — and Excel misreads them. The tool detects this automatically and produces an XLSX with columns correctly split.
Bank statements and financial data
Convert the transactions your bank exports as CSV into an organized Excel for reconciliation and expense tracking — without uploading financial data to any server.
Migrate data between spreadsheet platforms
Convert CSVs generated by Google Sheets or legacy systems into native XLSX, preserving the data structure for advanced editing with formulas, filters and charts.
Contact lists and campaign exports
Move CSVs from email marketing platforms, forms and surveys into Excel to dedupe, segment and share the list with your team in a format everyone can open.
Frequently asked questions
How do I convert a CSV file to Excel?
Drag your CSV into the tool (or paste the content), check the preview, and download the generated XLSX. You don't need Excel installed and there's no signup: the conversion runs entirely in your browser.
Why does my CSV open wrong in Excel, with broken characters?
Because Excel often assumes a legacy encoding (ANSI/Windows-1252) when you double-click a CSV, while most systems export UTF-8. The result is garbage like é instead of é. This tool reads the CSV as UTF-8 and produces an XLSX where accents and special characters display correctly — no settings required.
Why does Excel put all my data in one column?
That's the classic symptom of a delimiter Excel didn't expect: your file uses commas but your regional Excel expects semicolons, or the other way around. Convert the CSV here instead of opening it directly — the auto-detection splits the columns correctly and you download a ready XLSX.
What if my CSV uses semicolons instead of commas?
Nothing to worry about: the tool detects automatically whether the delimiter is a comma, semicolon or tab — common in files generated in Europe and Latin America, where the comma is reserved for decimals. You can also set the delimiter manually for unusual files.
Does the generated Excel keep special characters intact?
Yes. The tool preserves UTF-8 encoding — accents, umlauts, tildes and currency symbols from languages like Spanish, Portuguese, French or German. XLSX stores text natively, so you won't see broken characters again.
Can I build one Excel workbook from several CSVs?
Yes. Load or paste multiple CSVs in the same session and each becomes a sheet of the same XLSX workbook, named however you choose. It's the fastest way to consolidate several exports into a single organized Excel file.
Is my data uploaded to a server during the conversion?
No. Unlike converters such as Convertio or Zamzar, which process your file in their cloud, Docuboxer converts the CSV locally in your browser. Your data never travels the internet, and closing the tab leaves no trace.