Convert CSV to JSON
Get clean JSON from any CSV export: an array of objects keyed by the header, with numbers and true/false detected for you.
- Processed on your device
- No sign-up
- No watermark
- Works offline
Coming soon · FileMoat Pro
Open, search and sort millions of rows
A spreadsheet viewer with no row limit — still running entirely in your browser.
How to
CSV to JSON in three steps
- 1
Drop a CSV file.
- 2
Choose the JSON layout and whether to detect numbers and booleans.
- 3
Download the .json file.
FAQ
Good to know
Are my files uploaded to FileMoat?
No. The tool runs entirely inside your browser tab. Your files are read from your device, processed in memory and saved back to your device. Nothing is sent to our server — you can even disconnect from the internet after the page loads and it keeps working.
Will zip codes like 02134 lose their leading zero?
No. Types are decided per column: a column becomes numbers (or true/false) only if every value in it fits. A zip-code column containing 02134 stays text for every row, so your data stays consistent.