JSON Formatter & Validator
Validate JSON and format it for reading or compact transfer.
DeveloperDeveloper tools
CSV to JSON Converter
Convert header-based CSV into a JSON array of objects.
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How to use csv to json converter
- Paste CSV with one unique header name per column into Input.
- Select Process input and resolve any CSV parsing error.
- Check row count and string values before downloading converted.json.
Work through an example
Prepare unique CSV headers, preserve every field as a string, and check quoted commas before downloading JSON.
Convert a CSV while preserving leading-zero identifiers →Formats, privacy, and practical limits
This tool processes the values you enter in your browser. No account or upload to ERITHRA is required.
Files and generated results exist only for this tab session. Download any result you want to keep before leaving the page. Browsers may use temporary memory or disk cache while processing.
Frequently asked questions
Why does a quantity become a JSON string?
Automatic typing is disabled so every CSV field remains text, preserving leading zeros and long identifier digits.
Are duplicate column headers supported?
No. Give every header a unique name before converting. The tool rejects renamed duplicate headers instead of silently changing them.