FREE BROWSER TOOLDevelopment
CSV to JSON Converter
Prepare spreadsheet exports for API fixtures, content workflows or data imports. The first nonblank record supplies headers; following records become JSON objects. Cell values remain strings, including long identifiers and leading zeros.
Calculations run in your browser. No account or API key is needed.
Your result
- Data records
- 2
- Columns
- 3
[
{
"id": "001",
"title": "A practical guide",
"notes": "Ready, reviewed"
},
{
"id": "002",
"title": "Creator toolkit",
"notes": "Includes \"examples\""
}
]How to use this tool
Paste a header and data rows from your export.
Select the actual delimiter and preferred JSON layout.
Convert, resolve any row errors, and copy the JSON.
Quoted cells and line breaks
A quoted cell may contain a delimiter or a line break. Write an embedded double quote twice. The parser accepts CRLF, LF and CR record endings, skips empty physical lines, and checks each data record against the header width.
Preserve data before importing
Header names have surrounding whitespace removed and must be unique. Cell whitespace, empty strings and formula-looking text are retained. Numbers, booleans and dates are not guessed: perform any intended conversion in your destination with explicit rules.
Common questions
Why are numbers wrapped in quotes?
String output preserves postal codes, identifiers and large integers exactly. Convert selected columns only when their meaning is known.
Can it handle large exports?
Use up to 100,000 input characters, 2,000 data records and 200 columns. Processing stays in your browser; split larger exports before conversion.