CSV to JSON
Convert CSV into JSON array.
About the CSV to JSON Converter
This CSV to JSON tool turns spreadsheet-style comma-separated data into a JSON array of objects — the format most web APIs and JavaScript apps expect. It is handy when a stakeholder sends an Excel/CSV export and you need structured data for a prototype, migration, or quick script.
Paste CSV with a header row, convert, and copy the JSON. Check types afterward if your destination needs numbers/booleans instead of strings.
Typical workflows
- Importing product or user lists into a frontend mock
- Turning marketing exports into JSON for a one-off script
- Preparing fixtures for tests from a spreadsheet
How to use
- Export or copy CSV that includes a header row with column names.
- Paste it into the converter and run the conversion.
- Inspect the JSON keys, then copy into your app or file.
Tips for clean results
- Quote fields that contain commas; otherwise columns shift.
- Normalize dates and decimal separators before converting if systems disagree.
- Remove empty trailing columns from spreadsheet exports.
FAQ
Does this upload my spreadsheet to a server file store? Use the on-page converter for paste workflows; avoid pasting secrets or personal data you cannot expose.
What about nested JSON? Flat CSV becomes flat objects. Nested structures need a custom mapping step.