About this json to csv converter
Turn an array of flat JSON objects into quoted CSV. Columns follow the first appearance of each key. Missing and null values become empty cells. All cells are quoted, double quotes are escaped, and rows use CRLF. Use this workspace to prepare a result you can review before putting it to use. All processing takes place on your device, without an account or an upload of your inputs. Check the examples to understand the expected output, read the limitations for the supported scope, and reset the form when you want to start a separate task.
How the json to csv converter works
Columns follow the first appearance of each key. Missing and null values become empty cells. All cells are quoted, double quotes are escaped, and rows use CRLF.
JSON to CSV Converter examples
[{"a":1},{"a":2}]
"a" "1" "2"
[{"name":"Ada","note":"a,b"}]
"name","note" "Ada","a,b"
Limitations & privacy
Use 1–1,000 flat objects with up to 100 distinct columns, 100,000 input characters and 1,000,000 output characters. Formula-like cells are prefixed with an apostrophe, including negative values. Nested data is rejected; JavaScript number precision applies.
Inputs and results stay in this browser. Only tool identifiers are stored for your recently used tools. You can clear that history from the directory.
JSON to CSV Converter: frequently asked questions
How does the json to csv converter work?
Columns follow the first appearance of each key. Missing and null values become empty cells. All cells are quoted, double quotes are escaped, and rows use CRLF.
What can I inspect in the json to csv converter result?
The csv column audit helps you check the result before using it. Use 1–1,000 flat objects with up to 100 distinct columns, 100,000 input characters and 1,000,000 output characters. Formula-like cells are prefixed with an apostrophe, including negative values. Nested data is rejected; JavaScript number precision applies.
Does the json to csv converter upload my input?
Processing happens in your browser. No tool input or output is uploaded to a server. Use Reset to clear the current workspace before starting a separate task.
Updated September 20, 2026