Free Online CSV Toolkit
CSV editor with spreadsheet grid, format converter, file merger, data analyzer, and test data generator. All in your browser.
Tools
How It Works
Choose a Tool
Pick from 5 CSV tools — editor, converter, merger, analyzer, or generator.
Load & Process
Upload a CSV file or paste data. Edit, convert, merge, analyze, or generate.
Download & Use
Download the result as a file or copy to clipboard. All processing happens in your browser.
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FAQ
Is FreeCSVKit really free?
Yes, 100% free. No sign-up, no usage limits. Use all CSV tools without any restriction.
Is my data safe?
Absolutely. All processing happens entirely in your browser. No CSV data is ever sent to any server.
What formats can I convert to?
FreeCSVKit converts CSV to JSON, XML, SQL INSERT statements, YAML, HTML tables, Markdown tables, and TSV. You can also convert JSON back to CSV.
Can I edit large CSV files?
Yes. The CSV Editor uses virtual scrolling to handle files with thousands of rows efficiently. Only visible rows are rendered.
Can I merge CSV files with different columns?
Yes. The Merger aligns columns by name. Missing columns in any file get empty values. You can also join files on a shared key column.
Do I need to install anything?
No. FreeCSVKit works entirely in your browser. No downloads, no extensions, no sign-up required.