CSV to JSON Converter
Convert CSV (Comma-Separated Values) data to JSON format with automatic header detection.Updated 2026-03-16
How to Convert CSV to JSON
- Paste your CSV data into the input field (first row should be column headers).
- Select the delimiter if your CSV uses something other than commas.
- Click "Convert to JSON" to generate the JSON array.
- Copy the result or download it as a .json file.
All processing happens locally in your browser. Your data is never uploaded to any server.
Frequently Asked Questions
How does the CSV to JSON conversion work?
The converter reads the first row of your CSV as column headers (keys), then maps each subsequent row into a JSON object using those headers. The result is a JSON array of objects. For example, a CSV with headers "name,age" and a row "Alice,30" becomes [{"name":"Alice","age":"30"}].
Does it handle quoted fields and special characters?
Yes, the converter properly handles quoted fields containing commas, newlines, and escaped quotes. Fields wrapped in double quotes are parsed correctly, and escaped quotes ("") are converted to single quotes in the output.
Is there a file size limit for CSV conversion?
Since all processing happens in your browser, limits depend on your device memory. Most CSV files up to 50MB convert without issues. For very large files, consider splitting them first.
"CSV to JSON Converter." TxtTool, txt-tool.com, https://txt-tool.com/tools/csv-to-json/. Accessed 2026-03-16.