CyberCodeCSV to JSON Converter
Free online CSV to JSON converter. Paste or upload a CSV file and convert it to a clean JSON array instantly. Supports custom delimiters and headers. Runs 100% in your browser.
Why convert CSV to JSON?
CSV is the universal export format of spreadsheets and databases — rows of values separated by commas. JSON is the universal input format of web applications and APIs. Moving data from Excel or a database export into a web app almost always means converting CSV to JSON.
The conversion maps each CSV row to a JSON object using the header row as keys, auto-detecting numeric values. This tool supports comma, semicolon, tab and pipe delimiters — European CSVs often use semicolons.
How to use
- 01Paste your CSV data into the input box, or click Upload .csv to load a file.
- 02Select the delimiter used in your CSV (comma, semicolon, tab or pipe).
- 03Click Convert to JSON to generate the JSON array.
- 04Use Copy or Download .json to save the result.
Frequently asked questions
- What is CSV?
- CSV (Comma-Separated Values) is a plain text format for tabular data where each line is a row and values are separated by a delimiter (usually a comma). It is supported by Excel, Google Sheets and almost every database.
- Are number values converted automatically?
- Yes. Values that look like numbers are automatically converted to JSON numbers instead of strings, so you get clean numeric data without extra parsing.
- Is my data uploaded anywhere?
- No. All conversion happens in your browser using JavaScript. Your CSV data never leaves your device.