Keep IDs as text
Turn off type detection for codes like 00123 so the zeros are kept.
CSV to JSON Converter
Paste CSV or open a file exported from Excel or Google Sheets, and get clean JSON for your app, API or database. Quoted fields, commas inside values and different delimiters are all handled.
- 100% free
- No sign-up
- Data never leaves your browser
How to use
How to use the CSV to JSON Converter
- Paste CSV or open a .csv file.
- Check the delimiter; automatic detection works for most files.
- Choose objects or arrays, and whether to detect numbers and true/false.
- Copy or download the JSON.
Private by design. Your code and data are processed in your browser. Nothing is uploaded, logged or stored, so it is safe for API responses, configs and other internal data.
About this tool
Getting CSV data into JSON correctly
CSV looks simple until a value contains a comma, a quote or a line break. Proper CSV wraps such values in double quotes and doubles any quotes inside them. This converter follows that standard, so "Khan, Sara" stays one value instead of being split in two.
With type detection on, plain numbers become JSON numbers and true or false become booleans, while empty cells become null. Turn it off if you need everything kept as text, for example phone numbers or IDs with leading zeros.
Good to know
Conversion tips
Exporting from Excel
Use "CSV UTF-8" when saving to keep special characters.
No header row?
Untick the header option to get column1, column2 and so on.
Validate the output
Paste the JSON into our formatter to explore it.
FAQ
CSV to JSON Converter FAQs
Does it handle commas inside values?
Yes, as long as those values are wrapped in double quotes, which Excel and Sheets do automatically.
Can I convert Excel files?
Save the sheet as CSV first, then open it here.
What happens to empty cells?
They become null when type detection is on, or empty strings when it is off.
Is my data uploaded?
No. Everything runs in your browser.
Need extra development capacity?
Hire dedicated developers from iCreativez who work as part of your team.