CSV to JSON Converter
Paste CSV data and get clean JSON instantly — as an array of objects keyed by your header row, or as raw arrays. Auto-detects commas, semicolons and tabs, handles quoted fields correctly, and converts everything locally in your browser so your data never leaves your device.
Examples
name,age Ada,36 Alan,41
[
{ "name": "Ada", "age": "36" },
{ "name": "Alan", "age": "41" }
]How it works
The first row supplies the keys and every later row becomes one object; choose “Row arrays” to get plain arrays instead. On auto-detect, the tool counts the commas, semicolons and tabs in the first line, ignoring any inside quotes, and uses whichever appears most.
name,age,note
Ada,36,"likes ""tea"", coffee"
[
{ "name": "Ada", "age": "36", "note": "likes \"tea\", coffee" }
]Values stay strings unless you pick “Convert numbers”, which keeps IDs and postcodes with leading zeros intact. With conversion on, 007 becomes 7. A row with fewer cells than the header gets empty strings for the missing ones, and cells beyond the last header are dropped.
How to use CSV to JSON Converter
Why use this tool
Frequently asked questions
No. Parsing and conversion happen entirely in your browser. Nothing is sent or stored — safe even for sensitive spreadsheets.
Yes. The parser follows the CSV standard (RFC 4180): quoted fields can contain commas, double quotes and even line breaks.
Yes — the delimiter is auto-detected, and you can switch it manually between comma, semicolon and tab.
Enable “Convert numbers” and numeric values are emitted as JSON numbers instead of quoted strings.
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ToolOrbit is actively developed — feedback directly shapes what gets built next.
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