A LITTLE HELP FOR YOUR NEXT TASK

JSON to CSV Converter

Flatten nested JSON into spreadsheet-ready CSV with a table preview, Excel options and local processing.

Processed locally in your browser

JSON data

Nested data & Excel options

Records path (optional)JSON Pointer to a nested array or object. Leave empty for the root.Nested arraysColumn names Include header row UTF-8 BOM for Excel files Protect spreadsheet formulas Quote every cell Write null as literal “null” Sort columns alphabetically

Formula protection prefixes risky string cells and headers with an apostrophe. Disable only for trusted data when original values are required. Excel may still auto-format long numbers, dates and leading zeros.

Local processing · 1 MB JSON · up to 10,000 records, 200 columns and 500,000 expanded cells. No file uploads or saved data.

Preparing table converter…

How to use JSON to CSV Converter

Paste strict JSON or open a UTF-8 JSON file up to 1 MB. A root array becomes records; use an optional JSON Pointer such as /data/items for nested API responses.
Choose a delimiter and nested-array strategy. Object fields flatten into escaped dot paths or JSON Pointer columns, with all record keys included.
Convert locally, inspect the paged table, then copy or download CSV/TSV. UTF-8 BOM, CRLF line endings and spreadsheet formula protection are enabled for file exports by default.

Read the detailed guide →

Useful things to know

CSV is a flat string format, not a typed Excel workbook. Missing values and nulls become empty cells unless literal null is selected; arrays/empty containers can be kept as JSON. Numbers are serialized without JavaScript rounding, but Excel can still auto-format dates, leading zeros and long numbers; import affected columns as Text. Formula protection prefixes risky strings and headers with an apostrophe, which changes those CSV values and can remain visible in some readers. It reduces spreadsheet injection risk but cannot control spreadsheet behavior or later re-saving. Inputs: 1 MB, 50,000 JSON nodes, 128 JSON nesting levels, 32 flattening levels, 10,000 records, 200 columns and 500,000 expanded cells. Output is capped at 8 MB. Duplicate keys, NULs and ambiguous path collisions are rejected.

Is JSON to CSV Converter free, and how is my privacy handled?

Yes. JSON to CSV Converter is free to use without registration. Tool inputs are processed in your browser rather than uploaded to our servers. Optional usage analytics follows your cookie preferences; it does not receive your files or tool inputs. Keep your browser updated and review results before sharing.