CSV to JSON Converter

Convert spreadsheet data into clean JSON in your browser.

Private by design

Your inputs stay on your device and are not sent to our servers. Optional usage analytics does not receive your files or tool inputs.

CSV to JSON Converter

CSV, TSV and spreadsheet data to JSON

CSV or TSV

JSON

The result appears here.

Preparing tool

How to use CSV to JSON Converter

Paste CSV or TSV, open a file, or start from the sample.
Choose the JSON shape, number detection, nested keys and indentation.
Copy the JSON or download it as a file.

Read the detailed guide →

What are the limits of CSV to JSON Converter?

Handles up to 5 MB, 25,000 rows and 64 columns. Formulas and formatting from spreadsheets are not kept, only the values. Your data stays on your device.