CSV to JSON
Convert CSV (comma-separated values) into a JSON array of row objects. Headers from the first row become object keys. Quoted fields, escaped quotes, numbers and booleans are handled — all in your browser.
CSV in, JSON out
A small sample to show the shape of the conversion. Pretty-printed output, types preserved where possible.
id,name,age 1,Alice,30 2,Bob,25
[
{ "id": 1, "name": "Alice", "age": 30 },
{ "id": 2, "name": "Bob", "age": 25 }
]What you'll use this for
CSV to JSON shows up in every backend and ETL stack — feeding APIs, migrating configs, debugging payloads.
API & data imports
Prepare payloads for REST APIs and ingestion endpoints.
Data migration
Move configuration and tabular data between systems and formats.
Debugging
Inspect production data in a sensible, structured form.
ETL pipelines
Stage transformations between formats in your data flow.
How to convert CSV to JSON
Paste your CSV
Drop your source into the left editor. The sample loads on first visit — replace it with your data.
Click Convert
Or leave Auto-convert on for live updates as you type. Conversion runs locally.
Review the output
The right pane shows pretty-printed JSON with status, byte counts, and line count.
Copy or download
Use the action bar to copy to clipboard or save as a file. Or jump to the reverse converter for round-trip checks.
Frequently asked questions
Yes. Quoted fields, escaped double-quotes ("") and embedded commas are parsed correctly. Line endings \n and \r\n are normalized.
Numbers, true, false, and null are auto-cast. Everything else stays a string.
Yes — the first row is treated as field names. Strip your header row before pasting if your CSV has none, or rename to generic col1,col2.
No. Parsing runs entirely in your browser using JavaScript. Nothing leaves your machine.
Tens of MB work fine in modern browsers, though performance depends on your machine.
About CSV to JSON
CSV (comma-separated values) and JSON are the two most common ways to interchange tabular data. CSV is compact and spreadsheet-friendly; JSON is structured and API-friendly. This tool reads a header row, then turns each subsequent row into an object keyed by those headers.
How parsing works
- The first non-empty line is parsed as headers.
- Each subsequent line becomes a JSON object.
- Cells wrapped in
"..."may contain commas and""-escaped quotes. - Numbers,
true,false, andnullare typed automatically.
When to use
- API ingestion — most APIs prefer JSON.
- JS apps — load CSV exports as native arrays of objects.
- Data pipelines — staged transforms from spreadsheet exports.