Convert a CSV spreadsheet to a JSON array of objects instantly.
About this tool
Convert CSV text — exported from a spreadsheet or database — into a JSON array of objects, using the first row as field names. Supports quoted fields containing commas or newlines. All parsing happens in your browser.
Paste CSV text and Tabreon converts it to a JSON array of objects instantly — quoted fields with commas or line breaks are handled correctly, entirely in your browser.
Why use Tabreon for this?
Parsing runs client-side — your spreadsheet data never leaves your browser.
Correctly handles quoted fields containing commas, quotes, or embedded newlines, unlike a naive split-on-comma approach.
The first row is used as field names automatically, producing ready-to-use JSON objects.
How to convert CSV to JSON
1Paste your CSV. Paste CSV text, including a header row, into the input panel.
2Click Convert to JSON. Each subsequent row becomes one JSON object keyed by the header row.
3Copy or download. Copy the JSON output directly, or download it as a file.
What is CSV to JSON conversion?
CSV stores tabular data as comma-separated rows of plain text, with the first row typically naming the columns. Converting CSV to JSON turns each data row into a JSON object whose keys are the column names — the standard shape most APIs and JavaScript code expect, instead of raw rows and columns.
How Tabreon handles your data
Parsing runs entirely in your browser using the papaparse library — the CSV you paste is never transmitted to a server.
Key features
RFC 4180-compliant CSV parsing, including quoted fields
Automatic header-row detection for object keys
Clear error surfaced for malformed CSV (e.g. an unterminated quote)
Copy-to-clipboard and file download
Common use cases
Converting a spreadsheet export into JSON for a JavaScript prototype
Turning a CSV data dump into JSON to feed into a script or API
Inspecting exported analytics data as structured JSON instead of raw CSV rows
Common mistakes & limitations
All values are parsed as strings — numeric or boolean type inference is not performed, since CSV has no native types.
Only the first row is treated as headers; CSVs without a header row will use the first data row as field names.
Frequently asked questions
No. Parsing happens locally in your browser using the papaparse library — your data is never transmitted to a server.
CSV has no native data types — every cell is text. This tool preserves that faithfully rather than guessing types, so a value like "007" isn't silently turned into the number 7.
If a row has an unterminated quote or otherwise can't be parsed, the tool surfaces a clear error instead of silently producing incorrect JSON.