Free JSON to CSV
Convert JSON data to CSV format — 100% free in your browser.
Free How to use JSON to CSV
Developer utilities perform pure text transformations—JSON formatting, Base64 encoding, hash generation, JWT decoding, regex testing, and code minification—entirely in JavaScript within your browser. No snippets, tokens, or configuration payloads are sent to a backend because these tools operate on strings already present in the page. That design is ideal when you are inspecting production JWTs, hashing passwords for comparison, or minifying proprietary templates: your input stays in local memory and is discarded when you navigate away. The tools are deterministic and offline-capable once the page has loaded.
What JSON to CSV does and when to use it
JSON to CSV flattens arrays of objects into spreadsheet-friendly comma-separated files for analysts, importers, and quick Excel charts. Product managers export API samples, data journalists open public JSON datasets, and engineers prototype ETL without writing scripts.
Flattening rules matter when objects nest: dot notation or joined columns preserve structure as much as CSV allows. Headers derive from union of keys across rows with empty cells for missing fields.
How this tool works
The converter parses JSON locally, walks arrays of homogeneous objects, escapes commas and quotes per RFC 4180, and emits a downloadable CSV blob. Irregular nesting may require manual column selection in advanced UIs.
No JSON uploads to servers. Very wide objects produce many columns; consider filtering keys before conversion.
Step-by-step instructions
Paste JSON array data, preview column headers, adjust delimiter or nesting options if available, and convert. Download CSV and open in Excel or Google Sheets to confirm encoding and date formats.
Tips and best practices
UTF-8 with BOM improves Excel compatibility for non-English characters on Windows.
Sanitize formula injection by prefixing cells that start with =, +, -, @ when importing untrusted JSON.
Learn more: Format JSON for Debugging and Data Pipelines
JSON to CSV FAQ
Answers to common questions about JSON to CSV.
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