Convert JSON to CSV with Column Headers Online
Overview
By default, the converter uses JSON key names as CSV headers. If your JSON has short or technical key names (like usr_id instead of User ID), the header mapping option lets you rename columns before downloading the CSV without editing the JSON source.
How to Use This Tool
Paste your JSON array and click Convert. In the header mapping view, rename any column header before downloading. Reorder columns by dragging them. Click Download CSV with your customized headers.
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PDF Tool →Frequently Asked Questions
Can I choose which JSON fields appear as CSV columns?
Yes. After conversion, uncheck any column in the preview to exclude it from the CSV download. This lets you filter out internal IDs, timestamps, or other fields not needed for the export.
Can I rename JSON keys to more readable CSV headers?
Yes. Click on any header in the preview to rename it. The renamed headers appear in the downloaded CSV while the JSON data remains unchanged.
How do I control the column order in the CSV?
Drag and drop columns in the preview to reorder them. The CSV download reflects the order shown in the preview, not the original JSON key order.