CSV to JSON Converter — Free Online Tool
Convert CSV files to JSON format online for free. Paste CSV data or upload a .csv file and download clean JSON instantly. Supports custom delimiters.
About CSV to JSON
Converting CSV data to JSON format is essential for importing spreadsheet data into web applications, APIs, and databases that expect JSON. Our converter reads your CSV including the header row as JSON keys, handles quoted fields with commas inside, supports custom delimiters (comma, semicolon, tab), and produces either a JSON array of objects or a keyed JSON structure. Upload a .csv file or paste your CSV directly.
Frequently Asked Questions
Does it use the first row as JSON keys?
Yes — the first row of your CSV is treated as the header and becomes the keys in the JSON output.
Does it handle quoted fields with commas?
Yes — properly quoted CSV fields are handled correctly.
Can I use semicolons or tabs instead of commas?
Yes — select your delimiter before converting.
Can I upload a .csv file?
Yes — upload a .csv file directly or paste CSV text into the input area.
Is the JSON output formatted or minified?
Both — toggle between pretty-printed and minified output.