Data search tool
CSV to JSON online
Turn spreadsheet exports or copied rows into JSON fixtures with headers, delimiter choices, and optional type inference.
Examples for this search
Use the first row as object keys.
Infer numbers and booleans when useful.
Keep IDs as strings when precision matters.
The CSV parser handles quoted fields and escaped quotes. CSV-to-JSON uses the first row as object keys when headers are enabled. JSON-to-CSV flattens object keys into columns.
What this csv json converter does
Use this CSV JSON converter when spreadsheet exports need to become API fixtures, seed data, or developer test cases, or when JSON arrays need to be reviewed in a spreadsheet.
Common use cases
- Convert CSV exports into JSON arrays for tests.
- Turn JSON objects into CSV for spreadsheet review.
- Handle quoted commas, escaped quotes, and alternate delimiters.
- Infer numbers, booleans, and nulls when creating JSON fixtures.
Accepted input formats
id,name
1,Ada
[{"id":1,"name":"Ada"}]
Comma, semicolon, tab, or pipe
How it works
The CSV parser handles quoted fields and escaped quotes. CSV-to-JSON uses the first row as object keys when headers are enabled. JSON-to-CSV flattens object keys into columns.
Common mistakes
- Disable header row mode when the first row is real data.
- Choose the delimiter that matches the export before converting.
- Review inferred types if leading zeroes or IDs must stay as strings.
Frequently asked questions
Can it convert JSON back to CSV?
Yes. Use JSON to CSV mode with an array of objects.
Does it support tabs or semicolons?
Yes. Choose the delimiter before converting.
Is my data uploaded?
No. Conversion happens in the browser.