JSON to CSV
Turn a JSON list of records into CSV for Excel or Google Sheets.
CSV to JSON
Turn a spreadsheet export into JSON for an API or app. It runs on your device.
Your files stay with you. Your files never leave your browser. This tool runs on your device: nothing is uploaded to our servers, so there is nothing for us to store or see.
How to use it
- Paste CSV text or open a .csv file.
- Check the detected separator and header options.
- Copy the JSON or download data.json.
Questions people ask
Does it handle commas and line breaks inside values?
Yes. Values wrapped in double quotes can contain commas, new lines and doubled quotes, as in standard CSV. An unclosed quote is reported with its line number.
Why did my phone number or PIN lose its leading zero?
Values like 0123 are kept as text on purpose. Only plain numbers without leading zeros become JSON numbers. You can also switch number detection off to keep everything as text.
Can it read semicolon or tab separated files?
Yes. The separator is detected from the first line, or you can choose comma, semicolon, tab or pipe yourself. Many European and Indian Excel exports use semicolons.
What if my file has no header row?
Untick the header option and you get a list of lists instead of a list of objects.
Want this inside your own account?
Marketiism keeps your invoice numbers, GST reports, UPI payment links and WhatsApp reminders in one place. Leave your details and we'll call to set it up for your business, or start the trial yourself.
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