Data
CSV JSON
Convert CSV to JSON free. No signup. Files deleted after 1 hour.
Max 50MB5 conversions/hourView Basic and Pro plans →
About CSV to JSON
Convert a CSV file into a JSON array of objects, with the first row used as the keys. Numbers and booleans are auto-detected and cast; quoted fields with commas are handled correctly.
Frequently asked questions
Can I pick a different delimiter?
Yes, the tool auto-detects tab and semicolon; you can override in the options.
What if my CSV has no header row?
Toggle 'first row is data' and the output uses field_0, field_1, ... as keys.