JSON to CSV Converter
Paste a JSON array of objects to get clean, spreadsheet-ready CSV with automatic quoting — all in your browser.
From API data to a spreadsheet
When data arrives as JSON from an API or export, getting it into a spreadsheet for review, reporting, or sharing with non-technical colleagues usually means writing a quick script. This converter skips that: paste a JSON array of objects and it produces clean CSV, building the header row from every key it finds and filling each row in order.
It handles the details that trip up naive conversions — values with commas, quotes, or line breaks are wrapped and escaped so the file opens correctly in Excel, Google Sheets, or Numbers. Objects with different sets of keys are reconciled by unioning all columns, leaving blanks where a value is missing. Copy the result and open it anywhere.
Private and instant
All conversion happens in your browser, so your data never leaves your device.
Frequently Asked Questions
What JSON does this convert to CSV?
An array of objects, like [{"name":"Ada","role":"Engineer"}]. It collects every key across all objects into the header row and fills each row accordingly.
How are commas and quotes handled?
Values containing commas, quotes, or line breaks are automatically wrapped in double quotes and internal quotes are escaped, producing valid CSV that opens cleanly in Excel or Sheets.
What if objects have different keys?
The converter unions all keys found across the array, so every column appears. Missing values are left blank for objects that lack that key.
Is my data private?
Yes. Conversion runs entirely in your browser — nothing is uploaded or stored.
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