Instant Client-Side Multi-Format Engine
Universal Spreadsheet Converter
Convert datasets between CSV, TSV, JSON, SQL, and Markdown tables entirely in your browser with zero server uploads.
Drop your CSV, TSV, or JSON file here
Automatic format detection and in-memory schema mapping.
JSON Output Preview
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Frequently Asked Questions
The Universal Spreadsheet Converter supports bidirectional conversion between Comma-Separated Values (CSV), Tab-Separated Values (TSV), structured JSON records, SQL INSERT statements, HTML tables, and GitHub Markdown tables.
No. All parsing, schema mapping, and format generation occur strictly within your browser's JavaScript sandbox. No record or byte leaves your computer.
Yes. You can paste or upload JSON object arrays, and the converter will automatically extract keys as header columns and rows into a formatted CSV.