CSV ↔ JSON Converter
/csv-json-converterConvert CSV data to JSON arrays of objects, or JSON to CSV with automatic header generation.
APIs and databases speak JSON, but business users export CSV — bridging the two is a daily data task. This converter turns CSV into a JSON array of objects with automatic header detection, or flattens JSON back into CSV. It handles quoting, embedded commas, and line breaks correctly. Your data never leaves the page.
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FAQ
Frequently asked questions
Everything you need to know about csv ↔ json converter.
How are CSV headers handled?
The first row becomes the object keys when converting CSV to JSON, and object keys become the header row when converting JSON back to CSV.
Does this support quoted fields with commas?
Yes. The PapaParse parser handles quoted fields, escaped quotes, and multiline values correctly in both directions.
Which JSON shapes can become CSV?
An array of objects or a single object. Nested objects are serialized as their JSON text inside the cell, since CSV is flat.
Why did I get a CSV parse error?
The parser reported a structural problem, usually mismatched quotes or an unexpected character in a row. Inspect the line and fix the quoting.
Can I switch directions quickly?
Yes. The Swap button puts the current result back into the input and flips the mode between CSV to JSON and JSON to CSV.
Is my data sent anywhere?
No. Conversion is performed locally in the browser, so datasets of any sensitivity stay on your device.
Comparisons
CSV vs JSON for Data Exchange: Which Should You Choose?
Flat tables vs nested structures — when to use CSV and when to use JSON for your data.
Sorawi Tools vs ConversionTools: Which File Converter Should You Use?
Sorawi Tools is a free browser-based converter that never uploads your files. ConversionTools offers an API and server-side processing with daily limits. See how they compare on privacy, pricing, and file size. Sorawi Tools is our own product — this comparison is transparent about that. Pricing figures for ConversionTools are as of August 2026.
ConversionTools Alternatives: Free & Private File Converters (2026)
ConversionTools is a capable online converter, but its free tier is capped by daily limits and it processes files on a server. These free alternatives convert in your browser with no uploads, no quotas, and no accounts.
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