Convert CSV to Excel Online Free
Convert comma, semicolon, or tab-delimited CSV text files into formatted Microsoft Excel (.xlsx) workbooks instantly in your browser.
How to Convert CSV to Excel Online Free
DocxLab's CSV to Excel converter inspects comma, semicolon, or tab-delimited text files and builds a native Microsoft Excel (.xlsx) workbook. It handles multiline values inside quotes, detects numbers and booleans, styles table headers, and automatically sets column widths.
Upload CSV
Select your .csv, .tsv, or text export. Our parser automatically identifies whether comma, semicolon, or tab separation is used.
Structure Workbook
Tabular data is formatted into an OpenXML workbook with freeze-pane friendly column layouts and auto-typed cells.
Download .xlsx
Save your genuine Microsoft Excel workbook ready for formulas, charts, and pivot table analysis.
Privacy & Technical Note: Client-side processing guarantees that confidential customer lists, inventory exports, and financial records never leave your device.
Frequently Asked Questions about CSV to Excel Converter
How does this tool handle European CSVs formatted with semicolons?
Our engine inspects the first lines of your file and automatically switches delimiter mode if semicolons (;) or tabs (\t) are predominant, preventing single-column concatenation.
Will numbers and currency figures remain numeric in Excel?
Yes. Numeric strings are converted to Excel numeric cell types so you can immediately perform sums, averages, and formulas without text-to-number errors.
Are quotes and commas inside cells handled correctly?
Yes. The parser strictly implements RFC 4180 standard rules, allowing commas, quotes, and line breaks to exist inside quoted cell entries without breaking row alignment.
Is my uploaded CSV data stored on DocxLab servers?
No. The entire conversion process executes inside your browser using JavaScript and ExcelJS. No data is sent across the network.