CSV to JSON
Convert CSV data to structured JSON format
CSV Input
JSON Output
Turn spreadsheet exports into structured JSON
CSV is everywhere — exports from databases, CRMs, analytics tools, and finance systems all show up as comma-separated rows. Converting that into JSON gives you keyed objects, proper data types for numbers and booleans, and an array shape that fits naturally into APIs, app state, and database imports.
Use the converter when you need to
Feed a CSV export into an API
Transform a dataset from analytics or finance into JSON so you can POST it to an internal service or webhook.
Seed test data for an app
Take a sample CSV and produce a JSON array you can drop into fixtures, mock servers, or local databases.
Hand a dataset to a frontend developer
JSON arrays are easier to consume in JavaScript than parsing CSV by hand — convert once, ship the JSON.
How to convert CSV to JSON quickly
- 1
Paste your CSV (with headers in the first row) into the editor.
- 2
Click Convert to map each row to a JSON object using header names as keys.
- 3
Copy the JSON output or download it for direct use in your app.
Keep going
Convert JSON back to CSV
Round-trip the data when a downstream consumer needs CSV instead.
Format the JSON output
Beautify the converted JSON before pasting into code or a request body.
Validate the result
Confirm the converted JSON parses cleanly before sending it to an API.
Explore the converted data
Use the tree view to make sure nested fields and types look right.
Common CSV-to-JSON workflows
Convert a one-off CSV export from a colleague into JSON your code can consume directly.
Take production CSV exports and turn them into JSON fixtures for local dev and tests.
Convert a CSV of customers, products, or events into JSON your batch endpoint can ingest.
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JSON Viewer
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Frequently Asked Questions
Paste your CSV data (with headers in the first row) and click Convert. Each row becomes a JSON object, with column headers as keys. The output is a JSON array of objects.
Yes, the first row should be column headers. These become the JSON property names. If your CSV has no headers, add them manually before converting.
Numbers are automatically converted to numeric types, "true"/"false" become booleans, and empty cells become null. Everything else stays as a string.
Currently the tool expects comma-separated values. For TSV data, do a quick find-and-replace to change tabs to commas first, then paste into the converter.