JSON to CSV Converter

An array of objects works best — each object is a row. It also handles a single object (one row), an array of primitives (a single “value” column), and an array of arrays (written row-for-row). Mixed arrays that combine objects and non-objects are rejected.

Comma is the international default. Choose semicolon if your Excel uses a European locale (including Serbian), where comma is the decimal separator and semicolon separates columns. Tab is handy for pasting directly into a spreadsheet.

Any value containing the delimiter, a double quote or a line break is wrapped in double quotes, and quotes inside it are doubled — the standard CSV escaping every spreadsheet understands. Plain values are left unquoted.

They’re written as compact JSON inside the cell (for example {"a":1} or [1,2]). CSV has no concept of nesting, so this keeps the data intact rather than flattening or losing it.

Because that object didn’t have that key. The header is the union of all keys, so every field gets a column and rows that lack it are simply empty — the columns stay aligned.

Yes. Columns follow the order keys first appear across the objects, so the first object’s fields lead and any new fields from later objects are appended on the right.

No. The conversion runs entirely in your browser with JavaScript. Nothing is sent to a server, so it’s safe for private or internal data.

Copy the output and paste it into a new file saved with a .csv extension, or into a blank spreadsheet. Because it’s standard CSV text, any editor or spreadsheet app will read it.