How do I convert a CSV file to JSON?

Paste your CSV or drop the file into the converter above. It uses the header row as keys and turns each data row into a JSON object, then lets you copy or download the result.

Is my CSV data uploaded anywhere?

No. The conversion runs entirely in your browser, so your spreadsheet data never leaves your computer.

Does it handle quoted values and commas inside fields?

Yes. The parser respects quoted fields, so commas and line breaks inside quotes are kept intact rather than splitting the row.

All tools/Convert

CSV → JSON

Runs locally

Drop a CSV, paste it in, or load the sample. Smart header detection, type coercion, live JSON preview.

CSV input

Drop a CSV, or click to choose

Or paste content directly below.

JSON output

JSON preview appears here as you type.

Delimiter

Convert CSV spreadsheets into clean JSON arrays in your browser. Paste or drop a CSV file and get an array of objects keyed by the header row, ready to drop into an API, config, or database. No uploads — your data stays on your machine.

How to convert CSV to JSON

1Paste your CSV text or drop a .csv file into the tool.
2The first row is treated as the header, becoming the keys for each JSON object.
3Copy or download the resulting JSON array.

Headers become keys

Each column header in your CSV becomes a property name, and every subsequent row becomes one object in a JSON array. This is the format most APIs and JavaScript code expect, so converting CSV exports from Excel or Google Sheets into JSON makes them immediately usable in code.

Frequently asked questions

How do I convert a CSV file to JSON?: Paste your CSV or drop the file into the converter above. It uses the header row as keys and turns each data row into a JSON object, then lets you copy or download the result.
Is my CSV data uploaded anywhere?: No. The conversion runs entirely in your browser, so your spreadsheet data never leaves your computer.
Does it handle quoted values and commas inside fields?: Yes. The parser respects quoted fields, so commas and line breaks inside quotes are kept intact rather than splitting the row.