Try
About this tool
- Runs in
- your browser
- Your input sent to our servers
- Nothing
- Kept on this device
- nothing
More in the privacy policy.
How to use it
- 01Paste a JSON array of objects, open a .json file or drop one on the page, or pick one under Try.
- 02The CSV appears as you type. It uses commas unless you choose another separator: semicolon, tab or pipe.
- 03Copy the CSV or download it as a .csv file, or press Swap to convert it back to JSON.
Related tools
Questions
What JSON can it convert?
An array of objects gives one row per object. One object gives a single row, and an array of arrays is written row by row: [[1, 2], [3, 4]] gives 1,2 / 3,4.
Which columns appear, and in what order?
One column per key, in the order the keys first appear (keys that are whole numbers come first, as in JavaScript); a row without a key leaves that cell empty: [{"a": 1}, {"b": 2}] gives a,b / 1, / ,2.
Are numbers kept exactly?
Yes. Every number is written with the digits the JSON has, so IDs aren’t rounded and amounts keep their zeros: {"id": 12345678901234567890, "price": 1.50} gives id,price / 12345678901234567890,1.50.
Will Excel show accents correctly?
The downloaded .csv starts with a byte-order mark, which tells Excel on Windows to read it as UTF-8, so accents and other non-Latin text come through. Copy gives the text without it, for pasting elsewhere.
Is my data sent anywhere?
No. It’s converted in your browser, and a file you open is read there too. It isn’t sent to our servers, put into the page address or saved.