Free Online CSV Converter
Plain tabular text, portable but with no formatting or formulas.
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Pick a format to convert to.
Checking files and selected output formats.
How to convert CSV files online
Convert CSV data files to formatted spreadsheets, or extract data from other formats to CSV for universal interchange.
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Upload your CSV file
Drag and drop CSV files, data exports, database dumps, analytics reports, or contact lists. Comma, semicolon, tab, and pipe-delimited files are auto-detected and parsed correctly.
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Select your target format
Choose XLSX for formatted spreadsheets with column headers and data types, XLS for legacy Excel compatibility, PDF for printable tabular output, or ODS for LibreOffice. Encoding is auto-detected.
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Download formatted spreadsheet
Download your data in a properly formatted spreadsheet. CSV to XLSX produces a clean table with auto-sized columns. CSV to PDF creates a printable data report. Files are deleted within 1 hour.
Reasons to convert CSV files
Raw CSV data lacks formatting, column widths, and visual styling. Convert CSV to XLSX for a properly formatted spreadsheet with auto-sized columns, headers, and data type formatting.
Convert CSV to PDF for clean, paginated data reports with proper column alignment and page breaks. PDF output is ideal for sharing tabular data with non-technical recipients.
CSV stores only raw values with no formulas or charts. Convert to XLSX to add calculations, pivot tables, conditional formatting, and data visualizations in Excel.
CSV files can have inconsistent character encoding (UTF-8, Latin-1, Windows-1252). Converting through our tool auto-detects encoding and produces clean output with correct special characters.
CSV supports only a single flat table. Convert multiple CSV files to a single XLSX workbook with separate worksheets for organized, multi-table data management.
Convert CSV to XLS for importing into legacy enterprise software, older databases, and embedded systems that only accept the Excel 97-2003 binary format.
Convert CSV documents online, no desktop apps, no plugins. No watermarks added, formatting preserved, and files are deleted from our servers within 1 hour.
About the CSV Format
CSV (Comma-Separated Values) is a plain text format that stores tabular data with each row on a new line and values separated by commas. CSV has no formal standard body, though RFC 4180 defines common conventions. Its simplicity makes CSV the most universally supported data interchange format, every spreadsheet, database, programming language, and analytics tool can read and write CSV files.
CSV files contain only raw data values with no formatting, formulas, charts, or metadata. This simplicity is both its strength and limitation: CSV files are compact, human-readable in any text editor, and import directly into databases and data pipelines. CSV is the standard format for data exports, ETL workflows, machine learning datasets, CRM imports, and moving data between incompatible systems.