CSV to JSON Converter

Upload a CSV file and get a JSON array of objects back — one object per row, with the header row as keys. Commas, tabs, semicolons, and pipes are detected automatically. Free, no signup needed.

Drop a file here or browse

Accepts CSV files

Free — 3 requests/day, no signup. for 300 credits/month free.

How it works

Upload your CSV

Drop a .csv file above — the delimiter (comma, tab, semicolon, or pipe) is detected automatically.

Rows become objects

The header row becomes the keys; every data row becomes one JSON object in the output array.

Copy your JSON

Copy the array into your code, config, or API — or automate the conversion with one POST request.

Key features

What makes this csv to json stand out.

Array of objects output

The output is the shape your code actually wants: [{"col": "value", …}, …] — not a nested table structure you have to unwrap.

Delimiter auto-detection

Comma, tab (TSV), semicolon, and pipe-delimited files all convert without you specifying anything.

Encoding safe

UTF-8 (with or without BOM) and Latin-1 files decode correctly — no mojibake in your JSON strings.

Ragged rows handled

Rows with missing trailing cells are padded to the header, so every object has the same keys.

Big files welcome

Exports with thousands of rows convert in one call — no browser freeze, the parsing happens server-side.

Batch API conversion

Convert a folder of CSVs with a short script — one POST per file with output_format=json. See the Python example.

Use cases

Common scenarios where this tool saves you time.

Seeding databases and fixtures

Turn spreadsheet exports into the JSON your seed scripts, fixtures, and NoSQL imports expect.

API development

Convert sample data from analysts and customers into JSON payloads for testing endpoints.

Frontend prototyping

Get design-ready mock data from a spreadsheet into your React or Vue app in one step.

Data pipelines

Normalize incoming CSV drops into JSON before they enter your queue, lake, or ETL jobs.

Automate with the API

Use the same tool programmatically. Works with any language — just HTTP.

cURL

# Convert CSV to a JSON array of objects
curl -X POST "https://api.parsejet.com/v1/parse/auto/file?output_format=json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -F "[email protected]"

Python

import httpx, json

resp = httpx.post(
    "https://api.parsejet.com/v1/parse/auto/file",
    params={"output_format": "json"},
    headers={"Authorization": "Bearer YOUR_API_KEY"},
    files={"file": open("data.csv", "rb")},
)
rows = json.loads(resp.json()["text"])  # list of dicts
print(rows[0])

JavaScript

const formData = new FormData();
formData.append("file", csvFile);

const res = await fetch(
  "https://api.parsejet.com/v1/parse/auto/file?output_format=json",
  {
    method: "POST",
    headers: { Authorization: "Bearer YOUR_API_KEY" },
    body: formData,
  }
);
const rows = JSON.parse((await res.json()).text); // array of objects

Want to automate this?

ParseJet API gives you the same parsing power via a single HTTP endpoint. No ffmpeg, no poppler, no tesseract — just one API call.

curl -X POST https://api.parsejet.com/v1/parse/auto/url \
  -H "Content-Type: application/json" \
  -d '{"url":"https://example.com"}'

Read API Docs

Frequently asked questions

How do I convert a CSV file to JSON?

Upload the .csv file above — ParseJet returns a JSON array with one object per row, using your header row as the keys. For automation, POST to /v1/parse/auto/file with output_format=json.

What JSON structure do I get?

An array of flat objects: [{"name": "Alice", "age": "30"}, …]. The first row of the CSV is treated as the header and becomes the keys of every object.

Does it handle semicolons, tabs, and pipes?

Yes — the delimiter is sniffed automatically from the file, so European semicolon CSVs and TSV exports convert without any settings.

What about quoted fields with commas inside?

Standard CSV quoting is parsed correctly — a quoted field containing commas or line breaks stays one value.

Can I convert JSON back to CSV here?

No — this tool converts in one direction, CSV into JSON. ParseJet parses documents into structured text and data; it does not generate CSV files.

Is it free?

Yes. You get 3 free conversions per day with no signup, and a free API account includes 300 credits per month. Paid plans start at $19/month.

Start extracting text for free

No signup required. Parse your first file in seconds.

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