What problem does this tool solve?
Spreadsheet exports often use CSV, while websites and applications expect structured JSON. This free converter turns tabular CSV data into JSON, with selectable delimiters and optional column headings.
Six practical questions answered
How do I convert a CSV file to JSON?
Open the CSV file, choose its delimiter, and run the conversion. With the header option enabled, each data row becomes a JSON object with named fields.
How do I convert a spreadsheet exported from Excel to JSON?
Export the worksheet as a UTF-8 CSV file, then open it in the converter. Check the delimiter, column headings, and accented characters before downloading the JSON.
How do I use the first CSV row as JSON field names?
Enable “First row contains headers.” The converter uses those headings as property names. Duplicate headings must be corrected so that data is not silently overwritten.
Can I convert a semicolon-separated CSV file?
Yes. Select Semicolon as the delimiter. Commas inside a field then remain part of that field, subject to CSV quoting rules.
How can I move product records from CSV into JSON?
Open the product export with names, prices, and other attributes. The converter creates a JSON array for your next processing step. Values remain strings, so review the destination’s type requirements.
How do I handle commas inside CSV field values?
Use valid CSV quoting: wrap fields containing delimiters in double quotes and represent an embedded quote with two double quotes. The parser also supports line breaks inside quoted fields.
Practical example
A retailer exports 500 product records from an inventory system as UTF-8 CSV. They check the column headings and delimiter, then generate a JSON array while keeping product codes with leading zeros intact.
How to use the tool
Open a UTF-8 file locally or paste CSV. Choose a delimiter and whether the first row contains headers. Review the preview, then download JSON.
Additional use cases
- Prepare non-sensitive sample data for an application.
- Convert a spreadsheet export using semicolons.
- Preserve leading zeros in item codes.
Limits and supported formats
Up to 10,000 data rows and 200 columns within the text limit. Values remain strings. Rows with inconsistent widths are rejected.
Frequently asked questions
Can I convert CSV to JSON for free?
Yes. Conversion is free and no account is required.
Which CSV delimiters are supported?
Comma, semicolon, and tab are available. Select the one used by your source file.
Will accented characters survive the conversion?
UTF-8 is supported. Re-export files in other encodings as UTF-8 and review the character display before proceeding.
Are numeric-looking CSV values converted to numbers?
No. Fields remain text by default, preserving leading zeros in identifiers, ZIP codes, and product codes. Convert types separately when the destination requires it.
Can I save the JSON output as a file?
Yes. You can copy the complete output or download it as a JSON file.
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Request a free consultation (German form) →Editorial team: SEOSTUDIO · Updated November 9, 2026