CSV to Excel

• Excel to CSV
• Excel to JSON
• Excel Viewer
• Excel tools

This free CSV to Excel converter runs in your browser with batch conversion, delimiter (including auto-detect), encoding, first row as header, detect numbers and dates, and the option to combine multiple CSVs into one workbook, so you can import CSV into Excel format with confidence.

• Auto or custom delimiter: Choose Auto to detect the delimiter from the first line, or pick comma, semicolon, tab, or pipe. Changing options reconverts completed files.
• Encoding selection: Support for UTF-8, Windows-1252, and ISO-8859-1 so files from legacy systems or regional Excel exports open correctly.
• First row as header: Freeze the first row in the output Excel so headers stay visible when scrolling.
• Detect numbers and dates: Convert values that look like numbers or dates into Excel numbers and date serials for formulas and charts.
• Combine into one workbook: Turn multiple CSV files into one XLSX with a sheet per file; download a single “combined” XLSX.
• Custom sheet name: Set the Excel worksheet name (e.g. Data, Import). When combining, each sheet is named from the CSV filename.
• CSV and output preview: See the parsed CSV (first 50 rows) and the output Excel as tables before downloading.
• Batch conversion: Upload and convert multiple CSV files at once; each can be downloaded separately or combined into one workbook.
• Client-side and private: Conversion happens in your browser; files are never uploaded to a server.

Converting CSV to Excel gives you a native spreadsheet format for editing, formulas, and sharing with others who use Excel.

• Edit in Excel: Open the XLSX in Microsoft Excel or other spreadsheet apps.
• Formulas and formatting: Add formulas, formatting, and charts in Excel after conversion.

CSV is read with your chosen encoding, parsed using the selected or auto-detected delimiter, and written to an XLSX workbook. Options such as first row as header and detect numbers and dates are applied; you can preview the parsed CSV and the output Excel, or combine all files into one workbook.

• Upload and set options: Drag-and-drop or select CSV files. Set delimiter (Auto or comma, semicolon, tab, pipe), encoding, sheet name, first row as header, detect numbers and dates, and optionally combine into one workbook.
• Parse and convert: The tool reads the file with the chosen encoding, parses with the delimiter (auto-detected if set), optionally detects numbers and dates, and builds an Excel workbook. CSV and output preview are shown.
• Download XLSX: Download each converted file or the combined XLSX. Changing options reconverts completed files. All processing is client-side.

These options control how CSV is read and how the Excel file is built. All apply to every converted file; changing any option reconverts completed files.

• Delimiter (Auto or manual): Auto detects the separator from the first line (comma, semicolon, tab, or pipe). Or choose the delimiter explicitly for full control.
• Encoding: UTF-8 is the default. Use Windows-1252 or ISO-8859-1 for files from older systems or regional Excel exports that open with wrong characters in UTF-8.
• First row as header: Freezes the first row in the Excel sheet so it stays visible when you scroll. Use when the first row contains column headers.
• Detect numbers and dates: Values that look like numbers or parseable dates are converted to Excel numbers and date serials so formulas and formatting work correctly.
• Combine into one workbook: When enabled, all uploaded CSVs are merged into a single XLSX; each file becomes one sheet. Sheet names come from the CSV filenames. Use “Download combined XLSX” to get the file.
• Sheet name: In single-file mode, this is the name of the worksheet. Invalid characters are removed; the name is limited to 31 characters.

If your CSV shows garbled characters (e.g. accented letters or symbols), try a different encoding.

• UTF-8: Default for most modern exports and web data. Use when the file was saved as UTF-8 or “Unicode”.
• Windows-1252: Common for CSV exported from Excel on Windows in Western European locales. Try this if UTF-8 produces wrong characters.
• ISO-8859-1: Legacy Western European encoding. Use when the file is known to be in Latin-1 or when Windows-1252 doesn’t fix the display.

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