CSV to JSON
Convert CSV into JSON.
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About CSV to JSON
Paste raw CSV data and instantly convert it to clean, pretty-printed JSON. Toggle whether the first row is a header to get an array of objects (keyed by column name) or an array of arrays, and choose comma, semicolon, or tab as the delimiter. It correctly parses quoted fields that contain delimiters, line breaks, and escaped quotes, and shows the row count.
This tool is completely free with no sign-up, no limits, and no watermarks. All parsing happens entirely in your browser using plain JavaScript, so your CSV data is never uploaded to a server. Copy the JSON output with a single click.
Frequently asked questions
- Is this CSV to JSON converter free?
- Yes, it is completely free to use with no sign-up, no account, and no usage limits. You can convert as many CSV files as you like.
- Is my CSV data uploaded to a server?
- No. All parsing and conversion happens entirely in your browser using JavaScript. Your data never leaves your device and is never sent to or stored on any server, which makes it safe for sensitive or private data.
- What is the difference between the header and no-header options?
- When 'First row is header' is checked, the first CSV row becomes the keys and each following row becomes a JSON object, producing an array of objects. When unchecked, every row is output as an array of string values, producing an array of arrays.
- Does it handle quoted fields with commas or line breaks?
- Yes. The parser fully supports double-quoted fields that contain the delimiter, line breaks inside a field, and escaped quotes written as two double quotes (""). This follows standard CSV quoting rules.
- Which delimiters are supported?
- You can choose comma, semicolon, or tab. Semicolon is common in European spreadsheets, and tab lets you paste TSV (tab-separated) data directly.
- How do I use the JSON output?
- The result is pretty-printed with two-space indentation and shows the row count. Click the Copy button to copy it to your clipboard, then paste it into your code, API request, or another app.