Source .json
JSON
Nested key/value data, the lingua franca of web APIs.
- Compression
- Lossless
- Transparency
- Not supported
- Keeps
- Nesting, arrays, numbers, booleans and nulls
- Gives up
- Comments and column ordering guarantees
Data converter
JSON to CSV Converter
Turn JSON files into CSV without installing anything. The target format on this page is already set to CSV, so a single file or a whole folder is one press of Convert away.
JSON CSV
Files travel over TLS and are deleted from the server as soon as the conversion finishes.
JSON and CSV: what actually changes
JSON is nested; CSV is flat. Converting means picking the array of records to treat as rows and flattening any nested objects into dotted column names, which works cleanly for API responses that are already a list of similar objects.
Deeply nested or ragged data does not flatten well — you get sparse columns and lost structure. If the data is genuinely hierarchical, Parquet or NDJSON will serve you far better than a spreadsheet-shaped table.
How it goes3 steps
-
Add your JSON files
Drop them onto the box above or click Select File. Add as many .json files as you like — the whole batch converts in one go, and duplicates are ignored. -
Confirm CSV as the output
CSV is already selected as the target format on this page. Check the delimiter and encoding options if your data is unusual. -
Download your CSV
Hit Convert and grab the finished CSV files individually or as a single ZIP. Everything is deleted from the server once you have them.
Format facts
What each side of this conversion is good at, so you know what you are trading away.
Result .csv
CSV
Comma-separated plain text — one table, no types, readable by everything.
- Compression
- Lossy
- Transparency
- Not supported
- Keeps
- The header row and every value as text
- Gives up
- Formulas, formatting, multiple sheets and column types
Related converters
Other routes in and out of these formats.